WO2007098635A1 - Produit moulé en pâte fibreuse et son procédé de fabrication - Google Patents

Produit moulé en pâte fibreuse et son procédé de fabrication Download PDF

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Publication number
WO2007098635A1
WO2007098635A1 PCT/CN2006/000223 CN2006000223W WO2007098635A1 WO 2007098635 A1 WO2007098635 A1 WO 2007098635A1 CN 2006000223 W CN2006000223 W CN 2006000223W WO 2007098635 A1 WO2007098635 A1 WO 2007098635A1
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WO
WIPO (PCT)
Prior art keywords
model
pulp
molded article
chemical agent
pulp molded
Prior art date
Application number
PCT/CN2006/000223
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English (en)
Chinese (zh)
Other versions
WO2007098635A8 (fr
Inventor
Chi-Yee Yeh
Original Assignee
Forest Machinery Corp. Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Forest Machinery Corp. Limited filed Critical Forest Machinery Corp. Limited
Priority to PCT/CN2006/000223 priority Critical patent/WO2007098635A1/fr
Publication of WO2007098635A1 publication Critical patent/WO2007098635A1/fr
Publication of WO2007098635A8 publication Critical patent/WO2007098635A8/fr

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J7/00—Manufacture of hollow articles from fibre suspensions or papier-mâché by deposition of fibres in or on a wire-net mould

Definitions

  • the present invention relates to a pulp molded article and a technique for its manufacture. Background technique
  • pulp a collection of plant fibers containing a large amount of cellulose extracted from plants. It is quite common to use pulp to make finished products such as cutlery, containers, and packaging materials. In some cases, the sheet is firstly made of pulp, and then applied with a sizing treatment to form an oil-repellent and waterproof protective layer. Finally, the protective sheet is used to fold the finished product. A similar technique was revealed in the Taiwanese TW530077 patent case. However, the problem with this approach is that it can only be folded out of a limited product shape, and the scope of application is quite limited. The most common one is the lunch box or the box.
  • a pulp molding process which is roughly as shown in Fig. 3.
  • the pulp 1 is mixed with a large amount of chemicals 2 such as a water repellent and an oil repellent into water to form a mixed slurry 3.
  • the mixed slurry 3 is hot-pressed by a mold into a mold having a predetermined shape by a step 4 of forming a mold.
  • This model material is subjected to a moisture absorption drying step 5, such as the vacuum absorption method used in the patents of Taiwan TW30332 and European Patent No. EP07312145, to remove a moisture content of the model, that is, a pulp molded product 6 is completed.
  • the pulp molded article of the present invention is produced by dividing the process of the pulp molded article into several stages:
  • Pulp raw materials can be derived from biodegradable fiber raw materials, old corrugated boxes, old newspapers, wood chips, bagasse, and the like.
  • the pulp is placed in a mold of the extruder for hot pressing to form a mold having a predetermined shape.
  • the model has a fibrous structure based on the raw material of the pulp.
  • a chemical agent having properties such as water repellent, plastic strengthening, and/or oil repellent is applied to the model by spraying or coating.
  • the chemical agent may be a resin catalyst, an oil-repellent aid, a water-repellent aid, a water-resistant agent added to the paper, a silicone release agent for paper products, and a fixing agent for papermaking.
  • a chemical means is applied to allow the chemical agent to infiltrate into the fibrous structure of the model, for example, by inhaling the chemical agent into the fibrous structure of the model.
  • This process can be the original Chemical agents that are not easily incorporated into paper products "penetrate" into the fibrous structure of the model.
  • a slurry molded article produced by the method of the present invention comprising:
  • the chemical agent has waterproof properties and plastic strengthening properties, and penetrates into the fibrous structure of the model.
  • the beneficial effects of the present invention are:
  • the chemical agent in the present invention is applied to the surface of the model, and unlike the prior art, a large amount of chemical agent needs to be mixed with the pulp, which can greatly reduce the amount of the chemical agent, and not only saves cost, More economical and environmentally friendly.
  • the pulp molded articles produced by the method of the present invention also have high structural strength.
  • FIG. 1 is a flow chart of a preferred embodiment of the method of the present invention.
  • Fig. 2 is a cross-sectional view showing, in an enlarged schematic manner, a paper molded article produced by the preferred embodiment.
  • Figure 3 is a flow chart of an existing pulp molding process.
  • step 11 the raw material required for the pulp molding, pulp, is prepared.
  • the pulp is preferably selected from the group consisting of biodegradable fibrous materials, old corrugated boxes, old newspapers, wood chips, bagasse, and the like having many root vegetable fibers.
  • the selected plant fiber material is pulped or refining and then formed into the above-mentioned pulp and placed in a storage tank for use.
  • the present invention does not require the addition of a large amount of a chemical agent such as a water repellent or an oil repellent to the pulp in this step as compared with the conventional practice.
  • step 12 the pulp in the magazine is taken to form a molded article having a predetermined shape, such as various container shapes, hanger shapes, various package shapes or other shapes.
  • the method of forming the molded article can still be carried out by various conventional molding methods, such as hot press forming, in which the paper pulp is injected into a mold of a molding machine and dried by hot pressing to form the molded article. Alternatively, the pulp is injected into a net mold and vacuum-absorbed. Since the main material of the model is pulp, the cross section of any part of the model can be seen to have a fibrous structure composed of a plurality of root vegetable fibers.
  • a layer of chemical is applied to the surface of the model by spraying.
  • the chemical agent has water-repellent properties, plastic-type strengthening properties, and I or oil-repellent properties, and I or other characteristics, which may be selected from environmentally-friendly water-based resins, resin catalysts, oil-repellent auxiliaries, water-repellent auxiliaries, and paper-making materials.
  • a functional chemical such as a water-resistant agent, a silicone release agent for paper products, a plastic-type reinforcing resin, and a fixing agent for papermaking are added to make the subsequently completed pulp molded article waterproof and resistant. Oil, strong and many other characteristics.
  • step 14 the chemical agent on the surface of the model is forced to infiltrate into the fibrous tissue of the model by a coercive means.
  • a typical practice of this coercive method is to inject a chemical sprayed on the surface of the model into the fibrous structure inside the model in a "pumping manner".
  • This "pumping method” is generally referred to as vacuum pumping or vacuum suction in the industry.
  • the chemical will quickly enter the fibrous structure of the model, but it is not required to penetrate into the interior of the vegetable fiber.
  • step 15 a drying process of step 15 is carried out to complete a pulp molded article 16. Specifically, 180 to 21 (TC high-temperature drying treatment is carried out, and the chemical agent infiltrated into the fibrous structure of the model is baked, and the purpose is mainly to cure the plasticizing resin and remove the water.
  • steps 14 and 15 can also be carried out simultaneously, i.e., the chemical agent forcibly moisturizing the surface of the model in a high-temperature environment is infiltrated into the fibrous structure of the model.
  • FIG. 2 A cross-sectional enlarged view of the pulp molded article 16 produced through the above process is shown in Fig. 2.
  • the pulp molded article 16 includes the above-described model having a fibrous structure 161, and the above-described chemical agent 160.
  • the chemical agent 160 has waterproof property, plasticizing property, and/or oil repellency, and penetrates into the fiber structure 161 of the model, which is existing with the conventional paper pulp molding process. Pulp molded products are very different. More specifically, since the chemical agent 160 containing the plastic-type reinforcing property is not only present on the surface of the model but deeper into the fibrous structure 161 of the model, the pulp molding is 16 has a high structural strength.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Paper (AREA)

Abstract

La présente invention concerne un produit moulé en pâte fibreuse et son procédé de fabrication. Le produit moulé en pâte fibreuse est obtenu par un procédé comprenant les étapes suivantes: la fabrication d'un produit moulé en pâte fibreuse comportant un tissu fibreux dérivé de la pâte fibreuse, la pulvérisation d'un produit chimique étanche à l'eau et d'amélioration sur la surface du produit moulé, et la pénétration en force du produit chimique dans le tissu fibreux par succion. Ainsi, l'utilisation du produit chimique peut être réduit et une bonne intensité de structure peut être obtenue.
PCT/CN2006/000223 2006-02-15 2006-02-15 Produit moulé en pâte fibreuse et son procédé de fabrication WO2007098635A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2006/000223 WO2007098635A1 (fr) 2006-02-15 2006-02-15 Produit moulé en pâte fibreuse et son procédé de fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2006/000223 WO2007098635A1 (fr) 2006-02-15 2006-02-15 Produit moulé en pâte fibreuse et son procédé de fabrication

Publications (2)

Publication Number Publication Date
WO2007098635A1 true WO2007098635A1 (fr) 2007-09-07
WO2007098635A8 WO2007098635A8 (fr) 2007-12-13

Family

ID=38458634

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2006/000223 WO2007098635A1 (fr) 2006-02-15 2006-02-15 Produit moulé en pâte fibreuse et son procédé de fabrication

Country Status (1)

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WO (1) WO2007098635A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230031748A1 (en) * 2019-12-20 2023-02-02 Huhtamaki Molded Fiber Technology B.V. Method for Producing a Moulded Pulp Material for Packaging Unit and Such Packaging Unit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1231150A (zh) * 1998-04-06 1999-10-13 黄德泉 干纸纤维模塑成形方法
CN1253759A (zh) * 1998-11-13 2000-05-24 王蕴生 由植物纤维制做的全降解餐具和包装物及其制造方法
CN1293285A (zh) * 1999-10-13 2001-05-02 曹义东 一种纸浆模塑餐具及其制造方法
KR20020084317A (ko) * 2001-04-26 2002-11-07 정국진 펄프몰드의 제조방법
JP2003119700A (ja) * 2001-10-15 2003-04-23 Kao Corp 抄造型

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1231150A (zh) * 1998-04-06 1999-10-13 黄德泉 干纸纤维模塑成形方法
CN1253759A (zh) * 1998-11-13 2000-05-24 王蕴生 由植物纤维制做的全降解餐具和包装物及其制造方法
CN1293285A (zh) * 1999-10-13 2001-05-02 曹义东 一种纸浆模塑餐具及其制造方法
KR20020084317A (ko) * 2001-04-26 2002-11-07 정국진 펄프몰드의 제조방법
JP2003119700A (ja) * 2001-10-15 2003-04-23 Kao Corp 抄造型

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230031748A1 (en) * 2019-12-20 2023-02-02 Huhtamaki Molded Fiber Technology B.V. Method for Producing a Moulded Pulp Material for Packaging Unit and Such Packaging Unit

Also Published As

Publication number Publication date
WO2007098635A8 (fr) 2007-12-13

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