Pulp-Injection

Pulp-Injection at a glance

  • Extensive design flexibility
  • Precise, Thin, and Rigid as plastic
  • Recyclable as paper*1
  • Less water consumption
  • Premium paper-like texture

*1 Local regulation needs to be checked.

We offer one stop solution from product design to mass production in Germany and Japan.

Material

Pulp-Injection pellet consist of mainly pulp, starch and small amount of water.
Thanks to the high pulp content (> 50%), the products are classified as non-corrugated fiberboard with PAP 21 recycling code and recyclable in existing paper recycling system.

Process

Pulp-Injection production process is not ‘Thermoforming’ but ‘Injection molding’. The combination of unique material composition and our process know-how makes unique product shape and properties.

  1. Material preparation
    Pulp-Injection pellet is moisturized to be injectable into a mold.
  2. Injection molding
    The material is injected into a mold and formed.
  3. Drying in mold cavities
    The water content is vaporized in the cavity.
  4. Post trimming
    Unnecessary part is trimmed out.
Material preparation Injection molding
Material preparation
Pulp, Starch
Injection molding
Drying in mold Trimming & Deflashing
Drying in mold
Trimming & Deflashing

Recyclability and Bio-based content

Specifications

Max. parts size(mm) 300 × 300 × 50 Parts thickness(mm) 0.6 〜 1.0
Minimum radius(mm) 0.5 Typical annual production volume(pcs) 200,000 〜

Pulp-Injection properties in comparison to industrial-grade plastic

  Teststandard Industrial plastics Nissha

Pulp-Injection
material

Polystyyrene
(PS)
Polypropylene
(PP)
Specific gravity   1.05 0.9 0.85
Impact strength(Mpa) JIS K 7161 6 6.6 11.5
Tensile strength(%) JIS K 7161 28 19 29
Strentchability(Mpa) JIS K 7171 40 80 8.5
Bendingstrength(Mpa) JIS K 7171 47 33 24.5
Bending elasticity(Kj/m2) JIS K 7110 2,500 1,200 2,900
JIS: Japanese Industrial Standards

Application examples

All products are custom-designed. Our sales team are happy to discuss with you about specific design requirements, quantity and sustainability challenges.