Efficient Use of Resources

Working to Reduce Waste and Increase Recycling Throughout Product Life Cycles

Management Approach

Basic ConceptPursuing the Three R's (Reduce, Reuse, and Recycle) Throughout Product Life Cycles

Sekisui Chemical Group strives to thoroughly implement the “3 Rs” (reduce, reuse, and recycle) throughout its manufacturing life cycles. We also engage in Zero Waste Emissions Activities with the intention of reusing as resources all the waste we generate from our business activities. Along with continuing these Zero Waste Emissions Activities at our production sites, from 2020 we will work to promote recycling, including initiatives for using recycled materials, developing waste recycling technologies, and implementing these in the real-world, in aims of realizing a circular economy and a recycling-based society in 2050.

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Environmental Medium-term Plan Targets and Directions for the FutureNew Waste Reduction Initiatives

Under its Environmental Medium-term Plan covering the three years from fiscal 2017 to fiscal 2019, Sekisui Chemical Group raised and worked towards a target for reducing the amount of waste generated per unit of output by 1% every year compared with the fiscal 2016 level. In addition to reducing waste by improving production efficiency, we changed our perspective and undertook initiatives to shift our emphasis from simply selling waste materials as valuable materials to generating additional value by applying the resin processing technologies we have developed to date.
Along with continuing the Zero Waste Emissions Activities that we have long deployed at our production sites, we have also promoted these overseas and have deployed these at the business sites that have joined Sekisui Chemical Group as we have expanded business. From fiscal 2020, we will investigate and advance initiatives that promote recycling in aims of realizing a circular economy and a recycling-based society.

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Zero EmissionsZero Emissions Achievement Criteria and Accreditation System of Sekisui Chemical Group

Sekisui Chemical Group defines and advances Zero Waste Emissions Activities in the following manner:

  • (1)
    Not engaging in any outside incineration without thermal utilization (thermal recycling), or landfill outside or inside of facilities (recycling ratio: 100%)
  • (2)
    If the waste quantity is small and it is a type of waste that has never been recycled before, recycling methods and relevant contractors must be identified, and a service agreement must be executed.

We also have established uniform evaluation criteria known as the Zero Emissions Achievement Evaluation List. We have established a system designed to conduct internal checks and issue approvals for the status of observance of the evaluation criteria as well as legal compliance, rules and signage for waste segregation and storage, management of related facilities and waste reduction planning and management. The list obliges us to conduct inspection of outside contractors and to clarify treatment routes in order to enhance the management system through these activities.

Recycling Construction MaterialsPromoting the Effective Use of Construction Materials to Fulfill Our Responsibilities as a Housing Manufacturer

Sekisui Chemical pursues the industry-wide recycling of construction waste produced when houses are demolished—regardless of whether such houses were built by itself or by a competitor—as part of initiatives under the Japan Prefabricated Construction Suppliers and Manufacturers Association’s environmental action plan “Eco-Action 2020”

Social Responsibility Regarding WasteAddressing the Issue of Plastic Pollution in Marine Environments

With regard to the waste generated by its production businesses, the Sekisui Chemical Group exchanges manifests with operators and confirms that disposal is undertaken in a sound and proper manner.
While the impact of microplastics on our oceans and marine pollution have emerged as issues of recent concern, Sekisui Chemical Group does not engage in the manufacture and sale of primary microplastics where use presupposes dissolution. However, it cannot be denied that the possibility of deterioration in the natural environment and micro- reduction does exist in the event of the improper disposal of plastic processed products being discarded or of the plastic materials that go into the manufacture of the Group’s products either during or after use.
As the responsibility of a company engaged in the business of fabricating plastics, we are undertaking the following activities in order to workout fundamental solutions to this problem.

  • 1.
    Employee education
    In both the products we produce and our manufacturing processes, we must correctly recognize these types of issues, and develop human resources who are capable of finding a resolution. To this end, we engage in employee education while promoting environmental and social contribution activities.
  • 2.
    Contributing to transformation within society by providing education and raising awareness
    To ensure the proper treatment of waste, Sekisui Chemical Group recognizes the important need to build social systems while promoting a shift in the awareness of each individual and undertaking education and training. The Group is taking initial steps to consider collaboration between industry, government, and academia with a view to the early resolution of issues.
    Currently, Sekisui Chemical Group is a member of the Clean Ocean Materials Alliance (CLOMA) and a participant in the Japan Initiative for Marine Environment (JaIME). Every effort is being made to promote international collaboration, consider methods for resolving issues, and engage in a variety of activities, for example in the dissemination of educational information.
  • 3.
    Creating and expanding the use of products, technologies, and services that contribute to the realization of a recycling-based society and a circular economy
    Sekisui Chemical Group gas developed a technology that converts combustible waste, including marine plastics, into gas and then converts that gas into ethanol as a raw material for plastic using a microbial catalyst. We are considering the establishment of a test plant in the town of Yorii, Saitama Prefecture, and are working to identify issues with a view to scaling up operations toward social implementation. Currently, verification is underway at a pilot plant in Kuji City, Iwate Prefecture. This plant will process one tenth of the volume of municipal solid waste at a standard-scale waste disposal facility.
    In addition, we are also working with Sumitomo Chemical Co., Ltd. to develop plastics made from ethanol made from waste materials. We will contribute to the realization of a recycling-oriented society and circular economy by establishing and disseminating chemical recycling technologies to produce new plastics from waste.

Reducing Packaging MaterialsUsing Less Product Packaging

Sekisui Chemical Group has long been an environmentally conscious company, and we are reducing packaging volumes, introducing reusable boxes, and eliminating packaging wherever possible, among other initiatives. Our proactive efforts to reduce packaging since the early 2000s have enabled us to achieve results. We will continue these efforts in the future, taking further steps to reduce packaging waste.
As one initiative aimed at using less product packaging, we sell foldable shipping cartons and a range of plastic containers that help facilitate the implementation of returnable box systems.

Major Initiatives

Initiative for converting product scraps into raw materialUsing the scraps left after processing external walls as raw materials for products

The Sekisui Board Co., Ltd. Gunma and Mizukuchi business sites, which produce Sekisui Heim external walls, are moving forward with in-house material recycling using the scraps generated during the production process.
The scraps generated during the production of products from the completed external walls are crushed and classified, after which the extracted wood chips and cement are used as recycled raw materials. We are advancing development of a technology to increase the additive weight of recycled cement, and successfully increased the total recycled cement weight at these two sites in fiscal 2019 by 215 tons compared with the previous year.

Reduction of Waste Generated at Construction SitesSwitching to Factory Production to Reduce Materials That End Up Unused on Site

Modular houses are the main pillar of our housing business, and by doing as much as possible at the factory when prefabricating the modules, we are reducing the amount of construction work that has to be done on site. We are also enhancing collaboration between the manufacturing and construction sites, and implementing support activities to optimize the shipped components and to ensure proper use of the components at the construction sites.

Performance Data

Waste Generated by Production Sites

  • Some past figures have been revised due to improvements in precision.
  • From fiscal 2019, Medical Business results are collated and presented with Headquarters results following its separation from the High Performance Plastics Company as an independent entity. (P 187~190)
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  • Waste Generated by Production Sites and per Unit of Output (Index) / Japan

  • Waste Generated by Production Sites and per Unit of Output (Index) / Overseas

Production Site Waste Generation and Disposal Conditions / Japan and Overseas

(unit: tons)
  Total Waste Recycled Waste Unrecycled Waste
FY2015 58,053 55,181 2,872
FY2016 66,940 62,113 4,827
FY2017 68,777 63,654 5,123
FY2018 72,631 67,332 5,298
FY2019 69,767 63,844 5,922
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Fiscal 2019 Annual Production Site Waste Generation and Disposal Conditions / Japan and Overseas

  • *
    Change over previous year is in ( ) and proportion of total waste generation is in [ ].
  • Breakdown of Waste Generated at
    Production Sites / Japan

  • Breakdown of Waste Generated at
    Production Sites / Overseas

Index Calculation method
Generated waste amount Amount of waste generated = Amount of waste disposal outsourced + Amount recycled (use of incineration heat + materials recycling + sold at a price) + Amount incinerated in the Company; the items below are excluded:
waste generated by demolition of old houses of the clients, left-over materials at construction sites, disposal of facilities, OA equipment, etc., infectious waste generated during medical consultations / medical practices

Waste Generated on Construction Sites of New Housing

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  • Amount of Waste Generated on Construction Sites of New Housing (per Building) / Japan

  • *
    Because of changes to the waste materials data collection method used by the Housing Company, we are revising the fiscal 2016 benchmark
Index Calculation method
Amount of waste generated on construction sites of new housing Amount of waste generated on construction sites of new housing = Amount of waste generated during construction of outer walls (at factory) + Amount of waste generated during assembly (at factory) + Amount of waste generated at construction site of new housing
Amount of waste generated per building during construction of new housing = Amount of waste generated during construction of new housing / Number of buildings sold
Target: housing business in Japan

Waste Related to Office Work

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  • Amount of Copy Paper Used at Offices per Unit of Output (Index)

Attainment of Zero Waste Emissions Activity Targets

Production sites 42 plants in Japan and 11 plants overseas, including those of affiliated companies, achieved the target (of these, 1 plant in japan and 5 plants overseas achieved the target in fiscal 2015)
Research institutes All research institutes achieved the target by fiscal 2012
Construction of new housing All production sites achieved the target by fiscal 2003
Remodeling work All production sites achieved the target by fiscal 2004
Corporate headquarters buildings in Osaka/Tokyo Achieved the target by fiscal 2005
Demolition work Specified construction materials for fiscal 2018
Recycling rate (of concrete, wood offcuts, etc.): 99%
Indicator Calculation Method
Number of production sites that achieved zero emissions Number of production sites that achieved zero emissions in that year