Enterprise Europe Network

Low cost resin or fillers for thin wall injection molding.

Country of origin:
External Id: 
Last update
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Partner keyword: 
Plastics, Polymers
Properties of Materials, Corrosion/Degradation
Plastics and Rubber related to Chemical Technology
Packing products and systems
Manufacture of soap and detergents, cleaning and polishing preparations


A Belgian multinational active in consumer goods looks for cost effective, commercial ready material replacement of resin or low cost fillers that can be added to resin as blend to yield savings in the molded part. Industrial partners or research centers are sought for license agreement or technical agreement with the large account



Some key material properties of today’s typical LDPE (low density polyethylene) resin / homopolymer are: flexibility, warp resistance, melt index 20-30g/10min [ASTM D1238], tensile strength at yield 10-15 MPa, Shore D hardness 50-55, density 0.9g/cm3. As for material cost reference, North America market LDPE resin pricing is about $1.65/kg [$0.75/lb] and subject to oil pricing fluctuations.

The Belgian multinational based in Brussels intends to reduce resin cost for a high volume, thin wall [<1mm] package component, which today is made via high speed injection molding of 100% petrol based low density polyethylene [LDPE] resin.
They intend as well to reduce the environmental footprint.

Therefore the company is looking for:

- Cost effective, commercial ready material replacement to LDPE that can run in existing injection molds


- Low cost fillers that can be added to LDPE as blend to yield savings in the molded part. For example, polypropylene [PP] may be lower cost and would be of interest if it can meet the material property requirements (specified below) and is compatible with the existing injection molds.
- Low cost fillers are also a very interesting possibility provided they have been established to be compatible with high speed injection molding process without the abrasion seen with some materials like calcium carbonate.
- Material with lesser environmental footprint, so more sustainable.
- Material with supply base in North America and Europe.

The company is looking for collaboration with industrial partners or research centres able to provide the required solutions. The purpose would be setting up a long lasting cooperation allowing the large account to comply with its internal strategy and for the potential partner to interact in a systematic way with the large account so as to have immediate access to forthcoming similar requests.

Actually, for the technical cooperation, this large account intends to work together with potential partners having the suitable technical solution in line with the technical specifications listed for the purposes of this technology request.

As for the license agreement, should an already developed solution exist and be fully compliant with the technical requirements listed, the large account would envisage discussions on the terms of the license use.

Technical Specification or Expertise Sought

Cooperation sought: 
For the purposes of this technology need, the company has the following material requirements: 1) In general the material must: a. be safe for human contact b. be stable, so not subject to water permeation, microbial contamination, or absorption c. have ability to blend with masterbatch [colorant] for different effects d. not change significantly the mechanical or part surface properties [gloss and/or matte] e. ideally have IP protection or exclusivity, though at minimum have no restrictions for use 2) Molding/Dimension/Shrinkage Control a. Can survive injection molding process, where temperatures can exceed 230oC. b. Have similar dimensional stability and shrinkage as LDPE. c. Can run in thin wall part, typical 0.5-1.0mm wall thickness. d. Maintain the key moldability properties comparable to LDPE as specified above, particularly the tensile, hardness and melt index properties. e. Fillers must be proven to work in an injection molding process without mold abrasion. 3) Cost: a. For direct replacement the new material should be <$1.50/kg. b. For fillers, please consider density and maximum percent for best cost. The company is NOT interested in materials that: • have not been commercialized in injection molding • are not expected to have minimum safety [i.e. FDA – food and Drug Administration] approval in < 2 years • are harmful to injection molds • are technologies/innovations without IP protection or freedom to use • approaches to reduce resin use by reductions in wall thickness as that would necessitate injection mold changes

Stage of development

Cooperation stage dev stage: 
Already on the market

Partner sought

Cooperation area: 
Type of Partner sought: SMEs, industry or academia Area of expertise : plastics / materials and related properties Role of Partner Sought: depending on the solution's state-of-the-art, collaborate with the large account for technical collaboration or provide the technical solution sought under license agreement

Type and size

Cooperation task: 
SME 11-50,University,R&D Institution,SME 51-250