Granted Patent B2

US 12,509,827 · App. 16/618,727 · Granted Dec 30, 2025

Inventors: Harald John Kuiper (Heerenveen, NL); Jan Hendrik Timmerman (Brucht, NL)

Assignee: HUHTAMAKI MOLDED FIBER TECHNOLOGY B.V.

D21J3/00B65D5/5083B65D65/466B65D75/24B65D85/324B29C43/02B29C69/001D04H1/732D21H5/2671

Abstract

Claims (35)

1 . A method for manufacturing a three-dimensional shaped product from a fluff pulp material, the method comprising:

providing a fluff pulp material;

providing one or more additives to the fluff pulp material;

providing an air-laid flow of fluff pulp material;

compacting the air-laid flow of fluff pulp material;

providing the compacted flow of fluff pulp material directly to a three-dimensional shaped mould;

shaping the fluff pulp material in the mould; and

releasing the three-dimensional shaped product from the mould,

wherein compacting the air-laid flow of fluff pulp material increases the strength of the three-dimensional shaped product released from the mould,

wherein the one or more additives comprises a biodegradable aliphatic polyester in the range of 0.5-20 wt %, and

wherein biodegradable aliphatic polyester is polybutylene succinate (PBS).

2 . The method according to claim 1 , wherein providing the fluff pulp material comprises defibrizing raw material.

3 . The method according to claim 1 , wherein the step of providing an air-laid flow of fluff pulp material comprises providing a blanket-shaped flow.

4 . The method according to claim 3 , wherein shaping the fluff pulp material in the mould comprises the step of punching the product out of the blanket-shaped flow and providing it to the mould.

5 . The method according to claim 4 , further comprising the step of feeding a remaining portion of the fluff pulp material to the providing step of the fluff pulp material.

6 . The method according to claim 3 , further comprising the step of feeding a remaining portion of the fluff pulp material to the providing step of the fluff pulp material.

7 . The method according to claim 1 , further comprising the step of mixing the fluff pulp material with pulp material originating from recycled paper material.

8 . The method according to claim 1 , wherein the one or more additives comprises a biodegradable biopolymer.

9 . The method claim 1 , further comprising the step of providing a finishing layer to the moulded product.

10 . A method for manufacturing a three dimensional shaped product from a fluff pulp material, the method comprising:

providing a fluff pulp material;

providing one or more additives to the fluff pulp material;

providing an air-laid flow of fluff pulp material;

compacting the air-laid flow of fluff pulp material;

providing the compacted flow of fluff pulp material to a three-dimensional shaped mould;

shaping the fluff pulp material in the mould; and

releasing the three-dimensional shaped product from the mould,

wherein providing the fluff pulp material comprises defibrizing raw material, further comprising the step of compacting the fluff pulp material before providing it to the mould,

wherein the one or more additives comprises a biodegradable aliphatic polyester in the range of 0.5-20 wt %,

wherein biodegradable aliphatic polyester is polybutylene succinate (PBS),

wherein the step of providing an air-laid flow of fluff pulp material comprises providing a blanket-shaped flow to the mould, and

wherein compacting the air-laid flow of fluff pulp material increases the strength of the three-dimensional shaped product released from the mould.

11 . The method according to claim 10 , wherein shaping the fluff pulp material in the mould comprises the step of punching the product out of the blanket-shaped flow and providing it to the mould.

12 . The method according to claim 11 , further comprising the step of feeding a remaining portion of the fluff pulp material to the providing step of the fluff pulp material.

13 . The method according to claim 12 , further comprising the step of providing one or more additives to the fluff pulp material, wherein the one or more additives comprises a biodegradable biopolymer.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (39)