SANWA KAKO

Since the thickness varies from grade to grade, please contact us from the ”Contact Us” page on our website for more details.

Polyethylene and EPDM are incompatible with general adhesives sold at mass merchandisers and are difficult to bond. We recommend the use of adhesives that are claimed to be compatible with polyethylene.

(Examples: “PPX” and “Super X Hyper Wide” by Cemedine Co., ltd.)

*When using the adhesive, please test its effectiveness by yourself or consult with the adhesive manufacturer.

Yes, we can. We can flexibly respond to customer requests.
For details, please contact us from the “Contact Us” page on our website.

After applying the adhesive evenly to the form, let it dry once and then apply it evenly again.
We recommend that you apply the adhesive when the second coat of adhesive is half dry. We also offer double-sided adhesive tape.
For more information, please contact us through the “Contact Us” page on our website.

We can laminate with double-sided tape, adhesive processing, hot melt, etc.
For more information, please contact us through the “Contact Us” page on our website.

The largest size is 80mm x 520mm x 900mm (application: nursing products around bathtub). We have experience in manufacturing molded products of various shapes.
For more information, please contact us through the “Contact Us” page on our website.

Yes, we can. We offer direct adhesive bonding and adhesive bonding with Japanese paper (with reinforcement).

It is possible to physically cut with a hot wire. However, it is difficult to reproduce a clean-cut surface because the cut edge melts, and the melted portion becomes distorted and solid when it tries to harden. We do not recommend the use of hot wire cutting.

There are many applications in the general housing and industrial material fields. Please refer to ” The Application Examples” section of our website.

Please refer to “The Application Examples” section of our website. We have posted watercolor paintings of streetscapes of Kyoto and other examples of how foam is used in a variety of ways in your everyday life.

We will provide you with material proposals and quotations after asking about your applications and performance requirements. The person in charge differs depending on the customer’s region, so please contact us for more details through “Contact Us” link on our website.

The distributor we introduce to you will differ depending on your location, so please contact us through “Contact Us” on our website.

We have a distributor system and will usually introduce you to a distributor. Depending on the customer’s request and the nature of the project, we may be able to sell directly to the customer. For more information, please contact us through “Contact Us” on our website.

Yes, you can purchase our products through mail order. For details, please contact us through “Contact Us” on our website.

Delivery time varies depending on the delivery destination, grade, order lot, and other factors. For details, please contact us through “Contact Us” on our website.

Since it is necessary to agree on payment terms and order form, please contact us through the “Contact Us” page on our website for details.

BCP stands for Business Continuity Plan. Specifically, it is a plan for a company to minimize damage and continue/restore business operations in the event of a natural disaster such as a flood or earthquake, an accident at a factory, or a shutdown due to the spread of an infectious disease. Since September 2018, our company has partnered with an external consultant (Mitsubishi UFJ Research & Consulting Co., Ltd.) to formulate a BCP. For details, please refer to “Company Profile“.

Our two overseas factories are located in Vietnam (Ho Chi Minh City) and China (Changzhou, Jiangsu Province). Both factories also handle polyethylene foam and rubber foam. If you are considering procurement in Southeast Asia, please contact us through “Contact Us” link on our website.

We collaborate with external consultants to formulate a BCP, which we regularly check and operate. Most grades can be produced at three factories in Japan. We also have overseas factories in China and Vietnam that can produce and supply materials to Japan.
For more information, please contact us through “Contact Us” on our website.

In Japan, we can ship from a minimum of 1 piece of sliced products.

Sliced forms may be stacked and wrapped in stretch film or packed in cardboard boxes. We can handle packaging according to customer requests.
For more information, please contact us through “Contact Us” on our website.

We have strengthened our commitment to the SDGs (Sustainable Development Goals) and have established sustainable development goals.
As a specific initiative, we have registered as a member of JBPA (Japan Bio-Plastics Association) and developed an independent-cell biomass polyethylene foam (using plant-derived resin) that meets the “BiomassPla (BP Mark) Certification Standard” established by JBPA.
We are proposing materials to our customers so that we can play a part in the creation of environmentally friendly products. Currently, we have two grades certified as “BiomassPla (BP Mark)” (SUNPELCA BL-1550 and BL-2550).
For detailed physical properties, please refer to the “Product List” on our website.

You can order from one piece, but the delivery time may be longer than for general products. For details, please contact us through “Contact Us” on our website.

Please refer to “Physical Property Measurement Methods” on our website.

There are countless cells in foam, and those in which each cell is independent are called closed cell, while those in which each cell is continuously connected are called open cell. Generally, closed cell have high repulsive force and elasticity when compressed, while open cell have low repulsive force and a fluffy feel when compressed.

Please refer to “Physical Property Measurement Methods” on our top page.

The “Product List” and “Product Search” on our website cover the physical properties of all grades and other information. Please refer to the “Product List” and “Product Search” on our website.

In the rubber foam industry, the terms “hardness” and “~degree product” are often used to indicate the hardness of the foam.
*See also: “What is the foaming ratio? What is polyethylene foam with ~expansion ratio?

Foam is made by mixing a foaming agent, cross-linking agent, and other additives with a resin such as rubber or polyethylene and applying heat and pressure. In the process, the foaming agent decomposes and expands with foaming gas, which is called foam.
For those who are familiar with bread baking, it may be easier to understand if you imagine fermentation by yeast. Yeast is used as an ingredient in bread. Yeast has the effect of fermenting the sugar contained in the dough, producing carbon dioxide gas and alcohol. This carbon dioxide gas expands the dough to fill the bread mold, which is similar to our manufacturing process in which foaming gas expands rubber or resin in the mold.
Like bread, our products also have “ears” and “crusts” (unless otherwise requested by the customer, we ship without the ears or crusts).
For details of the manufacturing process, please refer to pages 4-5 of the “General Information” section.

In the polyethylene foam industry, we often use the terms “foaming ratio” and “~xed product”. This indicates how many times the size of the resin has been expanded.
For example, a “product with a foaming ratio of 14 times” means that 920 kg per m³ of compound (a mixture of resin, foaming agent, cross-linking agent, pigment, etc.) before foaming (expansion) is reduced to 65 kg per m³ after foaming (expansion) (920 kg / 65 kg ≈ 14 times).
The foaming ratio of each product can be checked in the “Product Search” section of our website.
*Related items: “What is hardness? What is a ~degree product?”

The hardness tester is a small and simple measuring instrument that can be held in the hand and measured on site.
Instead, the measurement method and range are very limited, so it is necessary to use different hardness testers for independent-cell foam and continuous-cell foam, which differ greatly in hardness.
Two types of hardness testers are available: C-type hardness and F-type hardness.
For example, when measuring open cell foam, the F-type hardness tester is used because the value is too low to be measured with a C-type hardness tester.
Conversely, when measuring closed cell foam, a C-type hardness tester is used because the value is too high for an F-type hardness tester.

As for the origin of the names C-type and F-type, please consider that the letters themselves have no special meaning, but are letters added for convenience to distinguish hardness testers.

For closed cell rubber foam (RUBAPELCA), C-type hardness values are shown in the product list. For other products, please contact us through “Contact Us” on our website.

In general, density refers to “true density,” but true density is a value calculated based on the volume of the substance itself, while apparent density is a value calculated as a single volume including irregularities on the surface and space inside the substance.
For details, please refer to “Apparent Density (Physical Properties Measurement Method).“.

The higher the foaming ratio, the lower the apparent density.
If the foaming ratio is low, the apparent density is high.

All objects have “positive electricity” and “negative electricity. This applies not only to people, but also to clothing, doorknobs, and car doors. When “positive electricity” and “negative electricity” are in balance, there is no electrical movement. However, when “negative electricity” is subjected to friction or force, it has a tendency to move, and moves away from the object. This causes an imbalance between “negative electricity” and “positive electricity,” resulting in a state in which one or the other is more abundant than the other. This state is called “static electricity,” and being charged with static electricity is called “being charged.
The excess “positive electricity” is charged (on standby) to combine with “negative electricity. When the moment of binding arrives, an electric current flow at once and a discharge takes place. When you get out of the car and close the door, you may feel a discharge of static electricity on your hands. The reason for this is that “negative electricity” is transferred to the hands due to friction and rubbing of clothes, and the hands become charged with “positive electricity,” and touching a door (metal) covered with “negative electricity” with those hands triggers a combination of positive and negative electricity.

Static electricity is closely related to humidity. Even if a person is charged, electricity quickly escapes through moisture in the air (electricity does not easily accumulate in people or objects) because there is more moisture in the air in a humid environment.
Static electricity occurs not only in winter but also in summer, but when humidity is high, the amount of electricity that accumulates in objects is low, and no painful discharge occurs. On the other hand, when humidity is low (dry), there is little moisture in the air and few escape routes for electricity to flow, so electricity tends to accumulate on people and objects, and when they come into contact with metal, an electric current flow at once, causing a painful discharge.

Conductive is a property that conducts electricity, while antistatic is a property that prevents static electricity (retention). There is no clear numerical standard. We define conductive performance as surface resistivity of 10 to the 6th power of Ω/sq or less, and antistatic performance as 10 to the 13th power of Ω/sq or less. 10 to the 13th power of Ω/sq or less is antistatic, which means that conductive polyethylene foam of 10 to the 6th power of Ω/sq or less is also antistatic.
In order to make it easier to understand the ease with which electricity passes (conductivity), we define “conductive polyethylene foam” as having 10 to the 6th power of Ω/sq or less. Customers can choose between conductive polyethylene foam and antistatic polyethylene foam according to their anti-static level.
Polyethylene foam with both conductive and antistatic properties is called “NEWPELKA” under our brand name.
Conductive polyethylene foams are available in the LCX series (independent cell type) and the OX series (continuous cell type). Antistatic polyethylene foams include the SX series (independent cell type).

reference：Product List

Surface resistivity refers to the resistance of a foam surface to the passage of electricity. The lower this value is, the easier it is for electricity to escape from the foam surface. The unit for surface resistivity is the ohm. However, since the value of “surface resistivity” varies depending on the size of the foam to be measured, we use the value of “surface resistivity. We answer “surface resistivity” in a separate question section.

Surface resistivity refers to the difficulty for electricity to pass through the surface of a foam. The lower this value is, the easier it is for electricity to escape from the surface of the foam (conductivity and antistatic properties).
Surface resistivity is a value specific to each material and will remain the same even if the size of the foam changes, as long as the foam material itself remains the same. The unit for surface resistivity is “Ω/sq. The reading of “Ω/sq” is “ohms per square” and represents the resistance per unit area (e.g., 1 cm2). The unit is the surface resistivity per 1 cm2 of the test piece.

Our conductive polyethylene foam has carbon kneaded into the resin, so the carbon does not drop out and the effect lasts semi-permanently. Other methods of imparting conductivity to foam include impregnation (soaking the foam in a conductive liquid) and surface coating, but none of these methods have long-lasting effects and lack stability.

Past test results have confirmed that antistatic performance can be maintained for up to six months after production.

Please refer to the “Product List” on our website.
Grades with excellent chemical resistance and oil resistance are also listed.
For details, please contact us through “Contact Us” on our website.

Since standards differ for each grade, please contact us through “Contact Us” on our website.

Since standards differ for each grade, please contact us through “Contact Us” on our website.

It is a phenomenon that may occur when a base sheet of foam is sliced.

The exact cause is unknown, but it is thought that when slicing with a large variation in physical properties within the base plate, the strain suppressed by the skin and ears on the surface of the base plate is released, resulting in a wavy appearance of the foam.

No, it cannot be converted. However, depending on the type of hardness tester used to measure, it is possible to provide an approximate reference hardness.
Please contact us through “Contact Us” on our website regarding the grade you require.

There are cases where discoloration may occur if the foam is used in an environment that is unsuitable for the customer’s use.
We propose the most appropriate materials after listening to the customer’s operating environment and performance requirements.
For example, we propose sulfur-free foam to prevent metal corrosion for customers who use it around lighting.

The resins used are different.
“Polyethylene resin.”
Compared to EVA resin, it is more crystalline, stronger, and superior in repeated use, thus protecting the product from impact. It is also less susceptible to acids and alkalis and is easy to wipe clean.
“EVA resin.”
Compared to polyethylene resin, EVA resin has lower crystallinity and is softer and easier to stretch when formed into a foam, making it less likely to damage products. It also features a high coefficient of friction and good gripping power. However, compared to polyethylene resin, EVA foam is less heat resistant than polyethylene foam due to its lower melting point.

OPCELL is a non-flammable type of open cell polyethylene foam, while SUPEROPCELL is a fire-retardant type of open cell polyethylene foam.

Reference: Product List | OPCELL

There is no correlation. The cell diameter size is controlled by adjusting the manufacturing conditions.

The embrittlement temperature (temperature at which the material breaks down when deformed or impacted) is generally said to be -70°C for polyethylene, -30°C for CR, and -40°C for EPDM, but even at higher temperatures, the material gradually becomes harder and various physical properties change as it gets colder. If requested by the customer, we will measure physical properties under the specified temperature environment. For more information, please contact us through the “Contact Us” link on our website.

The measurement room is a constant-temperature room at 23°C, and the physical properties in the catalog are measured values at that temperature.
Basically, the higher the temperature, the softer and the lower the temperature, the harder the material tends to be, and various physical property values change. We make material proposals in accordance with the customer’s operating environment and application.

We conduct a drop impact test in which a weight is dropped on the foam (foam), and based on the data, we create a graph such as “dynamic cushioning coefficient – maximum cushioning coefficient”.
If you need data on a specific grade, please contact us through “Contact Us” on our website.

Unlike urethane, the pigment will not yellow due to humidity, but ultraviolet rays and other influences may cause the pigment to fade or yellow due to material deterioration. Please avoid using or storing the product in direct sunlight.

Our foams are manufactured by decomposing chemical foaming agents. The decomposition of the blowing agent produces gases such as nitrogen, carbon dioxide, and ammonia, which remain in the foam bubbles for a certain period of time, which may cause the odor. After a few days, the residual gases in the foam are replaced by the air outside, and the odor subsides.

You may imagine that “flame retardant = non-flammable,” but since most products are made from petroleum derivatives, they ignite and burn when in contact with a flame. However, flame-retardant products will continue to burn once ignited, but flame-retardant foam is “self-extinguishing,” meaning that flames that have ignited the foam will extinguish as soon as the foam is moved away from the flame of the heat source.

Open cell foam has interconnected cell. Therefore, sound penetrates inside the sponge and hits many walls (bubble membrane), where the sound energy is reduced, and energy is returned as a reflection. The less sound that is returned outside, the more effective it is as sound absorption, and the rate of non-reflection is called the sound absorption rate.

Antimicrobial resistance is the ability to inhibit bacteria (bacteria), while mold resistance is the ability to inhibit fungi (hereafter referred to as mold).
Bacteria and mold have different histories. It is said that bacteria appeared on the earth about 4 billion years ago, and mold about 1 billion years ago. Considering that molds evolved from primitive organisms such as bacteria over a period of 3 billion years, it is easy to understand that the two organisms are completely different, from the basic structure of cells to the way they multiply.
Because of the difference in cell structure, some drugs that are effective against bacteria do not work against mold, and some bacteria can survive at temperatures that kill mold, so it is necessary to take countermeasures for each.
For this reason, we have developed “antibacterial foam” and “mold resistant foam” and offer them to our customers.

Although it has a open cell structure, it is less likely to absorb water than general urethane sponges because of the presence of a bubble film.
We also offer polyethylene foam, which absorbs water as easily as urethane sponge.

The base material of SUNPELCA is polyethylene resin, which is highly water-repellent and basically does not absorb water. For this reason, it is used in beat boards, shampoo hats, and bathtub mats.
However, water may enter the air bubbles due to water pressure if the product is used in such a way that it is submerged in water for a long period of time.

We define it as follows.

• • • • • • Sulfur-free.
          • When no sulfur-containing substances are used, and total sulfur is not detected in the quantitative analysis. The lower limit of quantification of total sulfur in the analyzer is 0.005% (50 ppm). less than 0.005% (50 ppm) is considered non-detect.
          • Ultralow Sulfur.
          • When no sulfur-containing material is used and no detection in the quantitative analysis of total sulfur, but carbon black is used. Or, when a value of 0.005% (50ppm) or more to less than 0.02% (200ppm) is detected as a result of the measurement. Or, when a value of less than 0.02% (200ppm) is detected as a result of the measurement.
          • Low Sulfur.
          • When no sulfur powder is used and a value of 0.02% (200ppm) or more to less than 0.3% (3000ppm) of total sulfur is detected as a result of quantitative analysis of total sulfur.

It is a value that expresses the ease of heat transfer of a certain substance. The smaller the value, the better the thermal insulation properties. Basically, the higher the foam ratio, the better the thermal insulation performance.

Since pigment is kneaded into the resin, the color of the pigment will not migrate to the counterpart material.

It depends on the method of use and the environment in which it is used. For more information, please contact us through “Contact Us” on our website.

It is not possible to make a general judgment, as the effects vary depending on our polyethylene foam, rubber foam, and the other material. For more information, please contact us through “Contact Us” on our website.

For general grade polyethylene foam, 60°C or less, and for EPDM and CR foam, 80°C or less can be said to be relatively safe temperatures for use. If you are considering using the foam in a temperature environment above that, we suggest a grade with heat resistance. Please check the thermal stability in the “Product List“. For further details, please contact us through the “Contact Us” link on our website.

*The general consensus is that the service temperature limits for polyethylene are 100-110°C, EPDM 140°C, and CR 130°C, but these temperatures are limited to non-foamed resins and rubbers.
For foam, care should be taken because phenomena such as heat shrinkage and molding occur at lower temperatures than these.

Reference link: Product List

JIS Z 8703 “Standard Conditions of Testing Locations” defines “room temperature” as “the temperature range of 5 to 35℃.
In addition, multiple values are provided for the temperature and humidity of the standard condition of the testing site, and one of them is to be selected. We select a temperature of 23°C and a relative humidity of 50% and conduct physical property tests in a room where the temperature and humidity are kept constant.

If left in sunlight for long periods of time, the foam may gradually deteriorate from the surface. Please avoid storing or using the product in places exposed to direct sunlight.
For more information, please contact us through “Contact Us” on our website.

Hypochlorite water is weakly acidic and sodium hypochlorite solution is strongly alkaline. Our polyethylene foam and rubber foam have high resistance to acid and alkali, so there is no problem.
For more information, please contact us through the “Contact Us” link on our website.

Please contact us through “Contact Us” on our website for details.

Please contact us through the “Contact Us” link on our website for details.

Please use the “Unit Conversion Form” in the “Measurement Methods of Physical Property” section of our website.

We have a variety of flame-retardant grades (UL94, material combustion test for railway Vehicles, etc.).
You can search for flame retardant grade products from the “Product Search” on our website.

We have a vertical incidence sound absorption coefficient and transmission loss measuring instrument to measure sound absorption coefficient. We are constantly working to create foams with improved sound absorption performance for the purpose of preventing noise from automobiles, railroads, and other vehicles. We have a lineup of many grades with sound absorption performance. For details, please contact us from “Contact Us“.
Continuous foam products have high sound absorption properties and are often used as sound absorbing materials. On the other hand, independent-cell products have low sound absorption, but are often used as sound insulation materials.

It is a standard established and approved by Underwriters Laboratories, Inc. in the United States.
For example, it applies to electronic equipment in the weak electrical field and foam used in automobiles, aircraft, and rolling stock. It does not apply to forms used in building applications or as materials for their equipment.

UL94 has two methods: the horizontal combustion test and the vertical combustion test.
The UL94 horizontal combustion test has three acceptance criteria: HF-1, HF-2, and HBF, in descending order of flame retardance from the top.
The vertical combustion test also has three passing criteria, with V-0, V-1, and V-2 in descending order of flame retardance from top to bottom.
To meet the five acceptance criteria other than HBF, the product must be self-extinguishing (i.e., the flame extinguishes itself when the heat source is removed).

Horizontal and vertical combustion tests are completely different test methods, and the results of one test cannot be used to accurately predict the results of the other. However, since the vertical combustion test tends to burn more easily than the horizontal combustion test, it is possible that an item that passed the vertical combustion test will also pass the horizontal combustion test.
We conduct both horizontal and vertical combustion tests for analysis and measurement.

This test is conducted in accordance with the former Japanese National Railways’ “standard for flammability of materials for railway vehicles,” and covers non-metallic materials used for rolling stock in Japan. Based on the test, materials are classified and certified into five categories in descending order of flammability: nonflammable, extremely flammable, flame retardant, loose flammability, and flammable. To be used in rolling stock in Japan, the test results must be nonflammable, extremely flame retardant, or flame retardant. If the product is loose or flammable, it cannot be used in rolling stock.
In our catalogs and other materials, a product that is labeled “Combustion test for railway vehicle materials Certified” means that the product has been certified for this flame-retardant property. One of the requirements to be certified as flame retardant is that the product has self-extinguishing properties (i.e., the flame extinguishes itself when the heat source is removed).

It is an international standard established to avoid duplication of standards due to the increase in the number of interstate routes within Europe. It applies to passenger vehicles and does not apply to freight vehicles.
The Hazard Level (“HL”) rule is used to determine flame resistance. Based on the results of various tests, the criteria for HL1, HL2, and HL3 are judged to be met, beginning with the most flame resistant. If any of the criteria are not met, the product is non-conforming and cannot be used in railcars destined for Europe. If foam is used as an interior or exterior sealing material, it must comply with three tests: oxygen index, smoke emission, and smoke toxicity.

The official name is “Federal Highway Administration, Motor Vehicle Safety Standard Three O Two”.
It is a flammability standard for automobile interior materials established by the U.S. Motor Vehicle Traffic Safety Act, but it also applies to vehicles exported from Japan.
Therefore, the parts of Japanese automobile manufacturers’ in-house standards that relate to combustion testing are based on the FMVSS 302 standard.
This standard does not evaluate flame resistance, but rather confirms that the burning speed is 4 inches (approx. 101 mm)/min or less. As with other flame-retardant standards, self-extinguishing properties (the ability of a flame to extinguish itself when the heat source is removed) are not required.
All grades of our products, including non-flame-retardant products, conform to this standard. However, since the applicable thickness varies depending on the grade, please contact us from the “Contact Us” page on our website for details.

Formerly referred to as “FAR 25.853(b),” it is now often referred to as “14CFR Part 25 Appendix F Part 1 (amdt. 25-853) 12sec-Vertical test,”
Although this is a U.S. law, Japanese aircraft also conform to the above standard and must conform to this standard in order to be used in aircraft components. One of the requirements for conformance to this test is that the product must have self-extinguishing properties (i.e., the flame extinguishes itself when the heat source is removed).

There are two types of combustion tests: those for which there is an “accreditation body” that accredits and registers test results, and those for which there is no accreditation body. In order to clearly distinguish (1) whether an accreditation body exists and (2) whether our products have been tested by an accreditation body or not, we use the following notation.

• Certified: The product has passed the test at an accreditation organization.
• Equivalent: The product has been tested and passed by an external testing organization or by the Company, although an accreditation body does exist.
• Compliant: No accreditation body exists, but the product has passed a test conducted by an external testing organization or by our company.

The term “applied” is used to indicate that some of the test conditions or calculation methods have been changed in the test standards.
For example, JIS K 6767, the polyethylene foam standard, states that compression set is conducted at a compression ratio of 25%.
However, in the case of continuous-cell polyethylene foam, a compression rate of 25% leaves almost no distortion, making it difficult to compare and evaluate foams. For this reason, the test item “50% compression set” is described as “in accordance with JIS K 6767” in the standard column.
The word “applied” is not indicated for tests that are conducted as they are in the test standards.

Available from Compressive Stress. For details, please refer to Compressive Stress.

SDS is an abbreviation for Safety Data Sheet.
It is a document that provides information on the chemical properties, hazards, toxicity, and handling of a chemical substance or mixture of chemical substances to the other party when it is provided.
You can download the SDS from the “Product List” on our website.

It is a regulation established in Europe to prevent the inclusion of hazardous substances in electrical and electronic equipment in order to facilitate the recycling of waste electrical and electronic equipment and to prevent the impact of such equipment on humans and the environment when it is finally disposed of in landfills or incinerated. Electrical and electronic equipment containing prohibited substances (controlled substances) exceeding the maximum allowable concentration cannot be sold in Europe.
Since this regulation has undergone multiple revisions, it is sometimes referred to as the “Revised RoHS Directive” or “RoHS 2.0 Regulation. The measured data is not only referred to as “RoHS 2.0 regulated substance data,” but also as “SGS data” after the names of frequently used testing laboratories, “ICP data” after the names of analyzers mainly used, and so on.

As of 2020, the following 10 substances are banned.
Lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE), di(2-ethylhexyl) phthalate (DEHP), butyl benzyl phthalate (BBP), dibutyl phthalate (DBP), diisobutyl phthalate (DIBP)

Our foam does not contain any restricted substances above the regulated values.
You can download RoHS documents from “Product List” on our website.

The REACH regulation is a common EU law regarding the registration, evaluation, authorization, and restriction of chemicals.
Under the REACH regulation, companies’ products are classified as “substances,” “preparations,” or “articles,” and foams are considered articles. In the case of articles, downstream manufacturers (companies, etc.) are obliged to provide information, etc. if the concentration of a substance of very high concern exceeds 0.1 wt%.
As of May 2022, the 26th Substance of Very High Concern has been released, bringing the total to 223 substances. Additional Substances of Very High Concern will be released every six months. In the future, the number of substances of very high concern is expected to expand to approximately 1,500.
Substances of Very High Concern are abbreviated as SVHC (Substances of Very High Concern).

Our forms contain less than the regulated concentration of Substances of Very High Concern (SVHC) (less than 0.1 wt% of the product).
wt” is an abbreviation for weight, which is “concentration when considered in terms of weight.
Example: If 1g of a substance of very high concern exists in 1,000g of a product, 1g (substance of very high concern) ÷ 1,000g (product) × 100 = 0.1wt%.
If you need a certificate of non-use of Substance of Very High Concern, please contact us through “Contact Us” on our website.

When disposing of forms in the course of the company’s business activities, they are treated as industrial waste. Please dispose of them as “plastics. For details, please follow the “Waste Disposal and Public Cleansing Law and related laws.
Individuals should dispose of the product in accordance with the regulations of each municipality.

Our foams are chemically cross-linked products and are compliant with environmental regulations such as RoHS and REACH. We can provide documentation related to environmentally hazardous substances upon request; documentation for each grade related to the RoHS regulation can be downloaded from the “Product List” on our website.
If you would like to request materials related to REACH regulations, please contact us through “Contact Us” on our website.

Foam and its manufacturing factory are not JIS marked products or JIS certified factories.
JIS Mark can be displayed on products and packaging as a “certified factory” if the quality control system and product inspections are reviewed and approved by an accreditation and registration organization. However, the target products are “products for which certifiable JIS product standards exist. Since there is no such standard for foams, they are not subject to JIS and the factory cannot be a JIS certified factory.

We offer grades certified with the BiomassPla (BP) mark.
The brand name is “SUNPELCA” and the grades are “BL-1550” and “BL-2550,” two in total.
We produce closed cell polyethylene foam using plant-derived polyethylene resin.
For details, please refer to the “Product List” on our website.
We are registered as a member of JBPA (Japan Bio-Plastics Association).
This grade has cleared the criteria of the JBPA and is certified as “BiomassPla ” and allowed to use the BP mark.

We have biomass mark certified products.
The brand name is “SUNPELCA”, and the grades are “BL-1550” and “BL-2550,” two in total.
We produce closed cell polyethylene foam using plant-derived polyethylene resin.
The biomass mark is a mark of environmental products that use biological resources (biomass) and whose quality and safety conform to relevant regulations, standards, and specifications.

This is one of the indicators that must be met in order to obtain the “BiomassPla Mark” certification from the Japan BioPlastics Association. It refers to the weight percentage of biomass as a raw material, but the calculation/calculation method changes depending on whether the target is resin, which is the raw material of the foam, or foam, which is the final product.

参考：How to calculate the degree of biomass plasticity with respect to a form

The biomass plastic degree of each resin is tested by resin manufacturers. In addition, some biomass plastics are registered on the positive list of JBPA (Japan BioPlastics Association) along with their biomass plastic degree.

Referring to the JBPA (Japan BioPlastics Association) Positive List, the degree of biomass plastic in the foam is calculated from the foam formulation as follows.

Biomass plasticity = weight of biomass plastic in foam ÷ weight of foam × 100
Weight of biomass plastic” is not the weight of the plastic itself, but the weight of pure biomass in the plastic, excluding petroleum-derived resins and additives, in order to judge more strictly.
The “weight of the form” is not the weight of the final product, but rather the weight of the raw materials in the formulation (including any decomposed materials in the production process).

It is the concept that the amount of CO2 taken into the body of a plant between its growth from seed and use as a product is the same as the amount of CO2 generated when the plant is incinerated after use and is not counted as a greenhouse gas because the CO2 is returned to the original air. For more details, please refer to the “Polyethylene Foam Blended with Plant-derived Resin ”in the “New Product Information” section of our website.

Ecology products ECOPELCA /POLYMOCK (Closed Cell Recycled Polyethylene Foam) are Eco Mark certified products. ECOPELCA /POLYMOCK is a foam made from foam scraps that have been converted back into resin pellets and re-foamed. It is made of 50% recycled raw materials and has a variety of hardness types and can be used in many different situations.
Please refer to the “Product List” for the product lineup.

No. The identification mark cannot be displayed.
The identification mark is to be displayed on plastic containers and packaging by companies that are obligated to recycle (re-merchandize) them under the Containers and Packaging Recycling Law, and foam is not subject to this law.

We are certified for quality management (ISO9001) and environmental management (ISO14001).
For details, please refer to the “Environmental Policy and Quality Policy” page.

We are not certified. When seeking certification, we are required to have a quality control system that includes not only the manufacturing process, but also material supply and post-shipment flow. For this reason, companies that ship finished products such as building interior materials often apply for certification. Foam (foam) manufacturers such as our company are located upstream in the process to the final product (end user), so it is extremely rare for us to be asked by customers whether or not we are certified for “F☆☆☆☆”.
F☆☆☆☆ (F-Forster) is a mark that can only be obtained for products with formaldehyde emissions of 0.12 mg/L or less, indicating the highest formaldehyde grade standard. Formaldehyde grades are classified into four ranks based on analysis of formaldehyde emission according to JIS (Japanese Industrial Standards) or JAS (Japanese Agricultural Standards). From the highest to lowest ranks are “F☆☆☆☆”, “F☆☆☆☆”, “F☆☆☆”, and “No indication”. Formaldehyde is considered a causative agent of sick building syndrome, but “F☆☆☆☆” can be used without being regulated by the Building Standard Law.

Please contact us through “Contact Us” on our website for details.

Please check the “Product List” page on our website. The maximum effective product dimensions for each grade are listed.
We can slice and supply products in the thicknesses requested by customers.

Tolerance is set for each grade. For details, please contact us through “Contact Us” on our website.

In order to meet niche demand, we produce small-lot production as made-to-order colors. In some cases, lead time may be required for made-to-order color forms compared to standard color forms.
For more information, please contact us through “Contact Us” on our website.

We offer a variety of leaflets, including general information brochures, sample books, and other new product brochures.
Please contact us from the “Contact Us” page on our website if you would like to request them.

All of them can be downloaded from “Product List“.
We do not have materials on the REACH regulation because of the high frequency of additions to the list of substances subject to the regulation. If you would like to request such information, please contact us through “Contact Us” on our website.

We will send you a sample of the molded product after asking you about the shape and size you require.
For more information, please contact us through the “Contact Us” page on our website.

We will propose the best form for you based on your application and performance requirements. Please refer to the “Application Examples” section of our website for reference. For more information, please contact us through the “Contact Us” link on our website.

We receive a large number of requests for this service every year.
Please contact us from the “Contact Us” page on our website for more details.

We also produce forms in custom colors other than the standard colors listed in the “Product List“. We will respond to your request after hearing the details of the application, quantity to be used, etc. For more information, please contact us through “Contact Us” on our website.

We have a lot of experience in joint product development with our customers.
For more information, please contact us through the “Contact Us” section of our website.

We are always challenging to create foam with new materials.
For more information, please contact us through “Contact Us” on our website.

Yes, depending on the purpose and content of your request.
For more information, please contact us through the “Contact Us” page on our website.

As this is the development department for new products, as a rule, no one other than members of the department are allowed to enter, either inside or outside the company.

We do not produce urethane foam. We produce polyethylene foam and rubber foam. For details, please refer to the “Product List” section of our website.