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Apparatus for manufacturing cellulosic fibrous material which can be pressed into molded parts
| Details |
Inventors: Nopper, Herbert; Knoch, Wolfgang;
Assignee: Casimir Kast GmbH & Co. KG (Gernsbach, DE)
Primary Examiner: Hall; James R.
Assistant Examiner:
Attorney, Agent or Firm: Antonelli, Terry & Wands
An apparatus for manufacturing cellulosic fibrous material suitable for future compressing into a molded article which comprises a prepulverizing apparatus for cutting cellulosic material, a mixing chamber for mixing the prepulverized cellulosic material with a bonding material, a forming head for receiving the mixture from the mixing chamber and for dispensing the cellulosic fibrous material/binder mixture as a mat upon a moving carrier, a heating apparatus for heating the mat and a pressing apparatus for compacting and bonding the heated fibers in the mat. |
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DETAILED DESCRIPTION We claim: 1.
An apparatus for manufacturing a dry-shaped cellulosic fibrous transportable mat suitable for future compressing into a molded article, comprising: (a) a pre-pulverizing apparatus for cutting and forming cellulosic waste material in dry form into pre-pulverized material, (b) a mixing chamber and grinder for mixing said pre-pulverized material with a bonding material in dry form comprised of at least one thermoplastic bonding agent and one thermosetting bonding agent, (c) a forming head for receiving said mixture from said chamber and for dispensing the mixture as a layer upon a moving carrier, (d) a heating means for plasticizing the thermoplastic bonding agent in said layer without setting of the thermosetting bonding agent therein, (e) a pressure roller for compacting and bonding the layer into a transportable mat, (f) a cooling means for cooling said transportable mat, and (g) a cutter for cutting said transportable mat to select sizes.
2.
The apparatus according to claim 1, wherein said grinder is a jaw grinder comprising friction jaws arranged on the inside of a rotational surface and concentric with striking bars positioned inside of said rotational surface.
3.
The apparatus according to claim 1, wherein said forming head comprises a sieve in the form of a cylinder segment and a brush which is rotatably mounted concentrically inside of said sieve.
4.
The apparatus according to claim 1, wherein said heating apparatus comprises a pressure chamber and a suction chamber, said chambers being positioned on an opposite side of said moving carrier in a manner producing a heated air current for passing through the layer therebetween.
Description:
The invention relates to a method for the manufacture of cellulosic fibrous material which can be pressed into molded parts, which method may involve: cutting up of cellulosic material into fibrous material, mixing of the fibrous material with at least one thermoplastic and at least one duroplastic (thermosetting) bonding agent, forming from the mixture a fleece, and compressing the fleece under the action of heat to a transportable pressable mat
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