WO1980002259A1 - Plastic binder with binder boards of paperboard and method of manufacturing the same - Google Patents

Plastic binder with binder boards of paperboard and method of manufacturing the same Download PDF

Info

Publication number
WO1980002259A1
WO1980002259A1 PCT/SE1980/000115 SE8000115W WO8002259A1 WO 1980002259 A1 WO1980002259 A1 WO 1980002259A1 SE 8000115 W SE8000115 W SE 8000115W WO 8002259 A1 WO8002259 A1 WO 8002259A1
Authority
WO
WIPO (PCT)
Prior art keywords
binder
edges
boards
fastening
holes
Prior art date
Application number
PCT/SE1980/000115
Other languages
French (fr)
Inventor
K Karlsson
Original Assignee
Galco Dux Ab
K Karlsson
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 Galco Dux Ab, K Karlsson filed Critical Galco Dux Ab
Priority to DE803041462A priority Critical patent/DE3041462A1/en
Publication of WO1980002259A1 publication Critical patent/WO1980002259A1/en
Priority to DK527280A priority patent/DK527280A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D3/00—Book covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
    • B29C66/12441—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being a single wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/304—Joining through openings in an intermediate part of the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/748—Joining plastics material to non-plastics material to natural products or their composites, not provided for in groups B29C66/742 - B29C66/746
    • B29C66/7486—Paper, e.g. cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
    • B29C70/76—Moulding on edges or extremities of the preformed part
    • B29C70/763—Moulding on edges or extremities of the preformed part the edges being disposed in a substantial flat plane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/84—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks by moulding material on preformed parts to be joined
    • B29C70/845—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks by moulding material on preformed parts to be joined by moulding material on a relative small portion of the preformed parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42C—BOOKBINDING
    • B42C7/00—Manufacturing bookbinding cases or covers of books or loose-leaf binders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42F—SHEETS TEMPORARILY ATTACHED TOGETHER; FILING APPLIANCES; FILE CARDS; INDEXING
    • B42F13/00—Filing appliances with means for engaging perforations or slots
    • B42F13/0006—Covers for loose-leaf binders
    • B42F13/0013—Covers for loose-leaf binders made of special materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/705—Books, albums
    • B29L2031/7052—Book covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/727—Fastening elements

Definitions

  • the invention relates to a binder comprising binder boards or sides of paperboard and a back made of thermo ⁇ plastic material and having fastening edges, made in one piece with said back, for the binder boards.
  • the invention also relates to a method of manufacturing such a binder.
  • binders of the above-mentioned type which are mostly used for storing various types of information sheets, the binder boards are anchored to the fastening edges of the back by hot riveting in a separate operation, through a number of holes along the ' fastening edges of the binder boards.
  • the binder boards may also have been provided, in a separate operation, with prefabricated edge protectors of metal or plastic, which have been pinched or glued onto the binder board edge cale
  • the anchoring rivets have often been a source of irr-itation due to the fact that the inserted sheets were often marked by the rivets.
  • the anchoring procedure by means of hot riveting is rather time-consuming and involves the handling of a number of parts
  • the purpose of the invention was therefore to achieve a binder with an anchoring means which removes the dis ⁇ advantages in function and in production of known binders.
  • a binder of the type mentioned by way of introduction which is characterized in that the two binder board fastening edges are 'grasped essentially in a U-shape, in section, by the fastening edges of the back of thermoplastic material and are securely anchored to the same by the binder board fastening edges having through—holes in which the thermo ⁇ plastic material forms pillar-shaped bridges joining the legs of the U 0
  • the binder boards have along their free edges continuous, thermoplastic edge protectors, essentially U-shaped in section and injection molded against said edges at the same time as the fa edge and which are anchored to the binder boards by their • free edges also having through-holes in which the thermo ⁇ plastic material forms pillar-shaped bridges joining the legs of the U ⁇
  • the invention also relates to a method of manufacturin a binder of the type mentioned in the introduction / which i characterized in that the two binder boards 1 of paperboard are provided, at least along the edges which are to be fastened to the back 2 , with a plurality of holes, that the binder boards are inserted into an injection molding machin against a molding tool which, together with the fastening edges of the binder boards, forms the molding cavity for the binder back 2 and .fastening edges 3, that thermoplastic material is then injected into the molding cavity which is thereby filled up, including the holes made in the binder boards, so that after hardening of the thermoplastic
  • the binder board are provided in the same step with an edge protector 0
  • an edge protector 0 This is achieved according to the invention by providing the two binder boards 1 with holes along their free edges as well, that the binder boards are inserted into an injection molding machine against a molding tool which forms, togethe with the binder board edges, the molding cavity for making the binder back 2, the fastening edges 3 and the binder board edge protectors 4, that thermoplastic material is the injected into the molding chamber which is thereby filled u including the holes made along the edges of the binder boar so that after hardening of the thermoplastic material it forms the back.2 of the binder, fastening edges 3, essential U-shaped in section, grasping around the binder board fastening edges 6, and edge protectors 4, essentially U-shaped in section, around the free edges of the binder
  • a binder made in this manner has functional advantages in that it replaces the rivets used previously with a smooth, attractive fastening edge.
  • a binder is produced with a back and sides • anchored to the same. All that remains is essentially to mount a mechanism for holding sheets. Thus it is only necessary to handle a limited number of parts, thus reducing costs.
  • the back is made in a conventional manner with three flexible portions, one in the center of the back and the other two adjacent to the fastening edges as shown in the accompanying drawings.
  • the back, as well as the fastening edges and the protectors, are made of thermoplastic material, preferably polypropylene.
  • the binder boards are preferably of stiff paperboard, At the fastening edge, the binder board's are provided with a number of through-holes through which, in the injection molding step, the thermoplastic material forms the pillar- shaped' bridges which join together the two U-legs in the plastic. fastening edge.
  • the number of holes and their size can be easily determined by the person skilled in the art.
  • the holes, which the outer edges.of . the binder boards are provided with for. the application of the edge protector can be of arbitrary shape and size, the only limitation being that the paperboard edge should not be significantly weakened.
  • the distribution of the holes can be quite variable along the edges of the binder board, but there should preferably be holes on either side of the two outer corners of the binder board and at least one additional location along each of the three edges which the protector covers .
  • thermoplastic material provides increased coloring possibilities and a pleasantness to the touch which is attractive to the customer
  • a special injection molding tool is required for injection molding.
  • This tool which is preferably made of tempered steel, is to lie, during injection molding, in contact with the paperboard sides a bit in from their edges and form a closed mold cavity with inlets for the liquid thermoplastic material through ingates.
  • the plastic When the plastic is injected it fills the entire mold cavity which is to form the back and fastening edges 3. If an edge protector is applied at the same time, the mold cavity for this is also filled at the same time.
  • the bridges or pillars in the hole are injected at the same time in one piece with the U-shape legs.
  • thermoplastic material is allowed to harden, to form the back of the binder with the binder boards fastened thereto, possibly provided with an edge protector.
  • Fig, 1 shows the opened binder.
  • the back 2 is of conventional type with a flexible joint in the middle and flexible joints 5 next to the smooth fastening edge 3 of the back.
  • the binder boards 1 are provided with edge protectors 4 of the same thermoplastic material as the back, in this case polypropylene.
  • Fig, 2 shows an enlarged view of the binder in Fig.1, along the line II-II with corresponding numerals as in Fig. 1, 3a indicates one of the holes in the binder board fastening edge 6 which are filled out with plastic bridges.
  • 4a indicates one of the holes along the outer edge of the paperboard which are filled with plastic to form bridges between the two legs of the protector 4,

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Connection Of Plates (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Clamps And Clips (AREA)

Abstract

A binder of plastic with boards of paperboard, the fastening edges of which, to the back, are grasped essentially in a U-shape, in section, by the plastic fastening edges (3) of the back (2) and are securely anchored to the same by the binder board (1) fastening edges (6) having through-holes, in which the plastic forms pillar-shaped bridges (3a) joining the legs of the U. Preferably, the binder boards have along their free edges continuous edge protectors (4), essentially U-shaped in section and injection molded against said edges at the same time as the fastening edge, which are anchored to the binder boards by their free edges also having through-holes, in which the plastic forms pillar-shaped bridges (4a) joining the legs of the U. Likewise, a method of manufacturing such a binder, in which the two binder boards of paperboard are provided, at least along the edges which are to be fastened to the back, with a plurality of holes, and the binder boards are inserted into an injection molding machine against a molding tool, which, together with the fastening edges of the binder boards, forms the molding cavity for the binder back, fastening edges and possibly edge protectors as well. Thermoplastic material is then injected into the mold cavity, which is thereby filled up so that after hardening of the plastic it forms the binder"s back, the fastening edges (3) grasping around the binder board fastening edges (6), and preferably also the edge protectors for the binder boards.

Description

Plastic binder with binder boards of paperboard and-method of manufacturing the same
The invention relates to a binder comprising binder boards or sides of paperboard and a back made of thermo¬ plastic material and having fastening edges, made in one piece with said back, for the binder boards„ The invention also relates to a method of manufacturing such a binder. In known binders of the above-mentioned type, which are mostly used for storing various types of information sheets, the binder boards are anchored to the fastening edges of the back by hot riveting in a separate operation, through a number of holes along the' fastening edges of the binder boards. The binder boards may also have been provided, in a separate operation, with prefabricated edge protectors of metal or plastic, which have been pinched or glued onto the binder board edge„ The anchoring rivets have often been a source of irr-itation due to the fact that the inserted sheets were often marked by the rivets. Furthermore, the anchoring procedure by means of hot riveting is rather time-consuming and involves the handling of a number of parts„
The purpose of the invention was therefore to achieve a binder with an anchoring means which removes the dis¬ advantages in function and in production of known binders. This is achieved according, to the invention by a binder of the type mentioned by way of introduction, which is characterized in that the two binder board fastening edges are 'grasped essentially in a U-shape, in section, by the fastening edges of the back of thermoplastic material and are securely anchored to the same by the binder board fastening edges having through—holes in which the thermo¬ plastic material forms pillar-shaped bridges joining the legs of the U0
According to a preferred embodiment, the binder boards have along their free edges continuous, thermoplastic edge protectors, essentially U-shaped in section and injection molded against said edges at the same time as the fa edge and which are anchored to the binder boards by their • free edges also having through-holes in which the thermo¬ plastic material forms pillar-shaped bridges joining the legs of the Uα The invention also relates to a method of manufacturin a binder of the type mentioned in the introduction/ which i characterized in that the two binder boards 1 of paperboard are provided, at least along the edges which are to be fastened to the back 2 , with a plurality of holes, that the binder boards are inserted into an injection molding machin against a molding tool which, together with the fastening edges of the binder boards, forms the molding cavity for the binder back 2 and .fastening edges 3, that thermoplastic material is then injected into the molding cavity which is thereby filled up, including the holes made in the binder boards, so that after hardening of the thermoplastic materi it forms the back 2 of the binder and fastening edges 3, which are essentially U-shaped in section, grasping around the binder board fastening edges 6 with pillar-shaped bridges 3a formed through said holes and joining the legs
Figure imgf000004_0001
According to a preferred embodiment, the binder board are provided in the same step with an edge protector 0 This is achieved according to the invention by providing the two binder boards 1 with holes along their free edges as well, that the binder boards are inserted into an injection molding machine against a molding tool which forms, togethe with the binder board edges, the molding cavity for making the binder back 2, the fastening edges 3 and the binder board edge protectors 4, that thermoplastic material is the injected into the molding chamber which is thereby filled u including the holes made along the edges of the binder boar so that after hardening of the thermoplastic material it forms the back.2 of the binder, fastening edges 3, essential U-shaped in section, grasping around the binder board fastening edges 6, and edge protectors 4, essentially U-shaped in section, around the free edges of the binder
O P boards 1 with pillar-shaped bridges formed through said holes and joining the legs of the U.
A binder made in this manner has functional advantages in that it replaces the rivets used previously with a smooth, attractive fastening edge. As regards production, in a single operation a binder is produced with a back and sides • anchored to the same. All that remains is essentially to mount a mechanism for holding sheets. Thus it is only necessary to handle a limited number of parts, thus reducing costs.
The back is made in a conventional manner with three flexible portions, one in the center of the back and the other two adjacent to the fastening edges as shown in the accompanying drawings. The back, as well as the fastening edges and the protectors, are made of thermoplastic material, preferably polypropylene.
The binder boards are preferably of stiff paperboard, At the fastening edge, the binder board's are provided with a number of through-holes through which, in the injection molding step, the thermoplastic material forms the pillar- shaped' bridges which join together the two U-legs in the plastic. fastening edge. The number of holes and their size can be easily determined by the person skilled in the art. The holes, which the outer edges.of.the binder boards are provided with for. the application of the edge protector, can be of arbitrary shape and size, the only limitation being that the paperboard edge should not be significantly weakened. The distribution of the holes can be quite variable along the edges of the binder board, but there should preferably be holes on either side of the two outer corners of the binder board and at least one additional location along each of the three edges which the protector covers .
An edge protector made in the manner described above is quite securely anchored. The use of thermoplastic material provides increased coloring possibilities and a pleasantness to the touch which is attractive to the customer,
A special injection molding tool is required for injection molding. This tool, which is preferably made of tempered steel, is to lie, during injection molding, in contact with the paperboard sides a bit in from their edges and form a closed mold cavity with inlets for the liquid thermoplastic material through ingates. When the plastic is injected it fills the entire mold cavity which is to form the back and fastening edges 3. If an edge protector is applied at the same time, the mold cavity for this is also filled at the same time. The bridges or pillars in the hole are injected at the same time in one piece with the U-shape legs.
After the injection molding step, the thermoplastic material is allowed to harden, to form the back of the binder with the binder boards fastened thereto, possibly provided with an edge protector.
An example of a preferred embodiment of a binder according to the invention is shown in the accompanying drawings.
Fig, 1 shows the opened binder. The back 2 is of conventional type with a flexible joint in the middle and flexible joints 5 next to the smooth fastening edge 3 of the back. In the figure, the binder boards 1 are provided with edge protectors 4 of the same thermoplastic material as the back, in this case polypropylene. Fig, 2 shows an enlarged view of the binder in Fig.1, along the line II-II with corresponding numerals as in Fig. 1, 3a indicates one of the holes in the binder board fastening edge 6 which are filled out with plastic bridges. 4a indicates one of the holes along the outer edge of the paperboard which are filled with plastic to form bridges between the two legs of the protector 4,
o l ■_ O-.iFI Λ. JPO

Claims

1, Binder comprising binder boards or sides of paper¬ board and a back made of thermoplastic material and having fastening edges, made in one piece with said back, for the binder boards, characterized in that the two binder board
(1) fastening edges (6) are grasped essentially in a U- shape, in section, by the fastening edges (3) of the back
(2) of thermoplastic material, and are securely anchored to the same by the binder board (1) fastening edges (6) having through-holes in which the thermoplastic material forms pillar-shaped bridges (3a). joining the legs of the U,
2, Binder according to Claim 1, characterized in that the binder boards (1). have- along their free edges continuous, thermoplastic edge protectors (4) essentially U-shaped in section and injection molded against said free edges at the same time as the fastening edges' (3) and which are anchored to the binder boards (11 by their free edges also having through-holes in which the thermoplastic material forms pillar-shaped bridges (4a) joining the legs of the U„
3, Method of manufacturing a binder according to Claim 1, comprising binder boards of paperboard and a. back formed of thermoplastic material with fastening edges, made in one piece therewith, for the binder boards, characterized in that the two binder boards (1) of paperboard are provided, at least along the edges which are to be fastened to the back (21, with a plurality of holes, that the binder boards are inserted into an injection molding machine against a molding tool which, together with the fastening edges of the binder boards, forms the molding -cavity for the binder back (21 and fastening edges (3) , and that thermoplastic material is then injected into the molding cavity which is thereby filled up, including the holes made in the binder boards, so that after hardening of the thermoplastic material it forms the back (2) of the binder and fastening which are essentially U-shaped in section, grasping around the binder board fastening edges (6) with pillar-shaped bridges (3a) formed through said holes and joining the leg of the U.
4. Method according to Claim 3 for manufacturing a bind with binder boards having edge protectors, characterized in that the two binder boards (1) are provided with holes along their free edges as well, that the binder boards are inserted into an injection molding machine against a moldi tool which forms, together with the binder board edges, the molding cavity for making the binder back (2) , the fastening edges (3) and the binder board edge protectors (41, that thermoplastic material is then injected into the molding cavity which is thereby filled up including the holes made along the edges of the binder boards, so that after hardening of the thermoplastic material it forms the back (2) of the binder, fastening edges (3), essentially U-shaped in section, grasping around the binder board fastening edges (61, and edge protectors (4), essentially U-shaped in section, around the free edges of the binder boards (1) with pillar-shaped bridges (4a) formed through said holes and joining the legs of the U,
PCT/SE1980/000115 1979-04-20 1980-04-21 Plastic binder with binder boards of paperboard and method of manufacturing the same WO1980002259A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE803041462A DE3041462A1 (en) 1979-04-20 1980-04-21 Plastic binder with binder boards of paperboard and method of manufacturing the same
DK527280A DK527280A (en) 1979-04-20 1980-12-10 PLASTIC BINDING WITH CARTON SMOKE PAGES AND PROCEDURES FOR MANUFACTURING THEREOF

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7903491 1979-04-20
SE7903491A SE430673B (en) 1979-04-20 1979-04-20 PLASTIC TERM WITH PAPER PAGES OF PAPER AND WAY TO MAKE IT SAME

Publications (1)

Publication Number Publication Date
WO1980002259A1 true WO1980002259A1 (en) 1980-10-30

Family

ID=20337856

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1980/000115 WO1980002259A1 (en) 1979-04-20 1980-04-21 Plastic binder with binder boards of paperboard and method of manufacturing the same

Country Status (10)

Country Link
DE (1) DE3041462A1 (en)
DK (1) DK527280A (en)
ES (1) ES8100973A1 (en)
FI (1) FI801232A (en)
FR (1) FR2454378A1 (en)
GB (1) GB2062544B (en)
IT (1) IT1136181B (en)
NO (1) NO803857L (en)
SE (1) SE430673B (en)
WO (1) WO1980002259A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520676A1 (en) * 1981-06-02 1983-08-05 Pratic Line Italiana Snc Colla CLASS
WO2007081787A3 (en) * 2006-01-06 2007-09-13 Staples The Office Superstore Molded binder
USD999819S1 (en) * 2022-08-17 2023-09-26 Hao Yan Binder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2542262B1 (en) * 1983-03-09 1987-10-16 Den Bussche Jean Jacques Van ARTICULATED BINDING FOR THICK DOCUMENTS

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH465555A (en) * 1966-11-15 1968-11-30 Karl Bene U Co Edge protection, especially for book covers and letter folders
SE338974B (en) * 1968-02-23 1971-09-27 T Nyblom
DE2644824A1 (en) * 1976-02-27 1977-09-01 Biella Neher Ag HANGING FOLDER
FR2351800A2 (en) * 1976-05-19 1977-12-16 Chevalerias Ets Document file index tab attachment system - includes ultrasonic welding of tab to cover through holes near cover edge

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH465555A (en) * 1966-11-15 1968-11-30 Karl Bene U Co Edge protection, especially for book covers and letter folders
SE338974B (en) * 1968-02-23 1971-09-27 T Nyblom
DE2644824A1 (en) * 1976-02-27 1977-09-01 Biella Neher Ag HANGING FOLDER
FR2351800A2 (en) * 1976-05-19 1977-12-16 Chevalerias Ets Document file index tab attachment system - includes ultrasonic welding of tab to cover through holes near cover edge

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520676A1 (en) * 1981-06-02 1983-08-05 Pratic Line Italiana Snc Colla CLASS
WO2007081787A3 (en) * 2006-01-06 2007-09-13 Staples The Office Superstore Molded binder
EP2292446A1 (en) * 2006-01-06 2011-03-09 Staples The Office Superstore, LLC Molded binder
EP2298573A1 (en) * 2006-01-06 2011-03-23 Staples The Office Superstore, LLC Molded binder
EP2298572A1 (en) * 2006-01-06 2011-03-23 Staples The Office Superstore, LLC Molded binder
USD999819S1 (en) * 2022-08-17 2023-09-26 Hao Yan Binder

Also Published As

Publication number Publication date
IT8012516A0 (en) 1980-04-21
DK527280A (en) 1980-12-10
DE3041462A1 (en) 1982-11-18
ES490695A0 (en) 1980-12-01
GB2062544B (en) 1982-12-08
SE430673B (en) 1983-12-05
SE7903491L (en) 1980-10-21
FR2454378B3 (en) 1982-02-05
NO803857L (en) 1980-12-18
GB2062544A (en) 1981-05-28
FR2454378A1 (en) 1980-11-14
IT1136181B (en) 1986-08-27
ES8100973A1 (en) 1980-12-01
FI801232A (en) 1980-10-21

Similar Documents

Publication Publication Date Title
BR8002997A (en) BINDING AND MOLDING COMPOSITION, PROCESS FOR MANUFACTURING A CASTING FORM AND PROCESS FOR CASTING A METAL
BR8506696A (en) BINDING COMPOSITION, MOLDING COMPOSITION, PROCESS FOR MANUFACTURING A CASTING FORM AND PROCESS FOR CASTING A METAL
NO903218L (en) PROCEDURE FOR LINING A PRODUCTION FORM IN A BROWN.
DK0973634T3 (en) Process for producing a molded door surface of a wood composite material, door surface made therefrom and dies made therewith.
WO1996016218A3 (en) Binder composition useful for producing non-woven fabrics and process for producing moulded parts made of non-woven fabrics
DE10080726T1 (en) Mold for a hot sprue injection machine and method for producing the same
NZ232845A (en) Casting, with vibration, pipes of sulphur concrete in a heated mould
BR7801346A (en) BINDING COMPOSITION, MOLDING COMPOSITION, PROCESS FOR THE MANUFACTURING OF FOUNDRY FORMS AND MOLDING PROCESS
DE69110506D1 (en) Press mold for forming composite material structures.
DE69723988D1 (en) RETRORE-REFLECTING LEVEL MATERIAL WITH EMBEDDED RETRORE-REFLECTING ELEMENTS IN A BINDER LAYER WITH MOLDED MEMORY AND METHOD FOR THE PRODUCTION THEREOF
WO2006014949A3 (en) Article casting method
US2981997A (en) Flagstone mold
NL189036C (en) METHOD FOR BINDING A POLYMER LINER ON A MODELED PULP BASE, AND FORMED PREPARATION.
WO1980002259A1 (en) Plastic binder with binder boards of paperboard and method of manufacturing the same
US6398995B1 (en) Rotationally molded door with integrally molded hinge member
ATE174354T1 (en) COMPOUNDS FOR PRODUCING FOUNDRY CORE AND MOLDS
JP2716413B2 (en) Forming mold for lining block with uneven surface
IT7831040A0 (en) COLD HARDENING POLYURETHANE AGGLOMERATE, FOR MIXTURES OF FORMING MATERIALS FOR THE MANUFACTURE OF MOLDS AND CORE FOR FOUNDRY.
ES1030666U (en) Shuttering for concrete pillars perfected. (Machine-translation by Google Translate, not legally binding)
JP2579430B2 (en) Die for forming object
DE59700058D1 (en) Mold for pressing moldings from plastic masses
ZA805594B (en) A binder for producing pourable, resin-coated moulding material, in particular for foundry purposes
JPS5610414A (en) Method of inserting reinforcing metal into resin molded product
IT1291536B1 (en) BINDING COMPOSITION FOR SAND FOR FORMING, IN PARTICULAR FOR GREEN FORMING
DE60010137D1 (en) Process for making sand molds in a shot and press molding machine

Legal Events

Date Code Title Description
AK Designated states

Designated state(s): DE DK GB NL NO US

RET De translation (de og part 6b)

Ref document number: 3041462

Country of ref document: DE

Date of ref document: 19821118

WWE Wipo information: entry into national phase

Ref document number: 3041462

Country of ref document: DE