CH404944A - Seam for welding plastic sheets - Google Patents
Seam for welding plastic sheetsInfo
- Publication number
- CH404944A CH404944A CH1607563A CH1607563A CH404944A CH 404944 A CH404944 A CH 404944A CH 1607563 A CH1607563 A CH 1607563A CH 1607563 A CH1607563 A CH 1607563A CH 404944 A CH404944 A CH 404944A
- Authority
- CH
- Switzerland
- Prior art keywords
- edges
- bead
- plastic sheets
- section
- seam
- Prior art date
Links
Classifications
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/40—Applying molten plastics, e.g. hot melt
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
- B29C65/5007—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like
- B29C65/5035—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like being in thread form, i.e. in the form of a single filament, e.g. in the form of a single coated filament
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
- B29C65/5064—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like of particular form, e.g. being C-shaped, T-shaped
- B29C65/5071—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like of particular form, e.g. being C-shaped, T-shaped and being composed by one single element
-
- 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
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/114—Single butt joints
- B29C66/1142—Single butt to butt joints
-
- 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
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/116—Single bevelled joints, i.e. one of the parts to be joined being bevelled in the joint area
- B29C66/1162—Single bevel to bevel joints, e.g. mitre joints
-
- 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
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/118—Single monotone curved joints
- B29C66/1182—Single monotone curved joints the joint being C-shaped
-
- 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
- B29C66/14—Particular design of joint configurations particular design of the joint cross-sections the joint having the same thickness as the thickness of the parts to be joined
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Revetment (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
Cordon pour la soudure des feuilles de matière plastique
La présente invention a trait aux cordons pour la soudure des feuilles de matière plastique et plus particulièrement des feuilles relativement épaisses du genre de celles utilisées pour la réalisation de revêtement de sol et tapis analogues.
On sait que les bords ou lisières de ces revêtements sont généralement taillés en biseau de manière à ce qu'une fois posés sur le sol, les bords en vis à vis de deux feuilles adjacentes déterminent entre elles un espace libre à section en forme de trapèze isocèle ouvert vers le haut. Pour combler cet espace libre et assurer simultanément l'assemblage des deux lisières, on applique à chaud un cordon de soudure réalisé en une matière plastique appropriée; les cordons employés en pratique sont prévus à section circulaire, de diamètre légèrement supérieur à la grande base ouverte du profil en trapèze de l'espace à remplir.
Si l'application d'un tel cordon de soudure ne soulève en elle-même aucune difficulté particulière,
I'expérience démontre toutefois que ladite application détermine une saillie longitudinale demi-cylindrique et provoque en outre des boursouflures, gonflements et autres déformations de la face supérieure des lisières des deux feuilles assemblées. Il est donc nécessaire de prévoir une opération d'arasage de manière à ce que les deux tapis ou revêtements et le cordon intermédiaire soient rigoureusement dans le même plan. Cette opération constitue en fait un travail long et particulièrement délicat.
L'invention a pour objet un cordon de soudure établi à un profil tel que son application à chaud ne nécessite aucune opération d'arasage ou de finition subséquente.
Le cordon de soudure suivant l'invention est caractérisé en ce qu'il présente en section un profil semicirculaire dont la face supérieure rectiligne comporte deux ailes latérales en forme de coin.
Le dessin annexé permettra de mieux comprendre l'invention.
La fig. 1 est une coupe verticale montrant les bords ou lisières en vis à vis de deux feuilles ou tapis en matière plastique.
La fig. 2 montre en coupe transversale un cordon de soudure de type usuel.
La fig. 3 est une coupe analogue à celle de la fig. 1, montrant l'assemblage des deux bords à l'aide du cordon de la fig. 2.
La fig. 4 montre cet assemblage après arasage.
La fig. 5 est une coupe transversale d'une forme d'exécution du cordon de soudure suivant la présente invention.
La fig. 6 montre en coupe l'assemblage réalisé à l'aide d'un tel cordon.
A la fig. 1 on a représenté en 1 et 2 les lisières de deux tapis en matière plastique destinés à constituer des revêtements de sol. A la façon connue les bords en vis à vis de ces deux tapis sont taillés en biseau en déterminant ainsi un espace a présentant en section un profil substantiellement triangulaire (pointe tournée vers le bas).
Dans la pratique courante on utilise pour combler cet espace a et réaliser l'assemblage des deux lisières 1 et 2, un cordon de soudure en matière plastique appropriée, du genre de celui représenté en 3 à la fig. 2. Un tel cordon présente en section un profil circulaire de diamètre légèrement supérieur à la grande base dudit espace a. Comme représenté à la fig. 3, l'application à chaud de ce cordon 3 pro voque la déformation de la face supérieure des lisières 1 et 2, laquelle face est ainsi boursouflée vers le haut. De plus la matière qui constitue ce cordon représente un volume supérieur à celui de l'espace a, de telle sorte que le surplus détermine une saillie ou relief longitudinal sur la ligne d'assemblage des deux lisières 1 et 2.
Après refroidissement il est donc indispensable de prévoir une opération d'arasage à l'aide d'un tranchet ou outil analogue, afin de rétablir substantiellement la planéité de l'ensemble, comme montré à la fig. 4. On conçoit qu'une telle opération d'arasage est particulièrement délicate puisqu'elle intéresse non seulement la matière du cordon de soudure 3, mais encore celle des lisières des deux tapis.
En vue de remédier à cet inconvénient, la présente invention a pour objet un cordon de soudure spécialement profilé. Une forme d'exécution de ce cordon a été représentée en 13 à la fig. 5; comme montré, son profil en section comporte une partie inférieure substantiellement demi-circulaire 13a, solidaire sur sa face supérieure rectiligne de deux petites ailes latérales 13b en forme de coin.
On comprend que ce cordon 13 peut être très aisément appliqué à chaud dans l'espace libre ménagé entre les deux lisières, référencées 11 et 12 à la fig. 6. Il ne provoque aucune boursouflure des bords en vis à vis dont la face supérieure tend au contraire, sous l'action de la chaleur et de la pression d'application (laquelle peut être plus aisément exercée sur une face plane que sur une face courbe), à s'affaisser vers le bas; cet affaissement est en quelque sorte compensé par les ailes latérales 13b du cordon qui rétablissent ainsi le profil plan. On conçoit par ailleurs que moyennant un calibrage exact du cordon et un réglage précis de l'espacement réciproque des lisières des deux tapis, il puisse n'y avoir aucun surplus de matière, de telle sorte que l'assemblage ne nécessite finalement aucune finition.
Seam for welding plastic sheets
The present invention relates to beads for welding plastic sheets and more particularly relatively thick sheets of the type used for the production of floor coverings and similar rugs.
It is known that the edges or edges of these coverings are generally bevelled so that once placed on the ground, the opposite edges of two adjacent sheets determine between them a free space with a trapezoidal section. isosceles open upwards. To fill this free space and simultaneously ensure the assembly of the two edges, a hot weld bead is applied made of a suitable plastic material; the cords used in practice are provided with a circular section, with a diameter slightly greater than the large open base of the trapezoidal profile of the space to be filled.
If the application of such a weld bead does not in itself raise any particular difficulty,
Experience shows, however, that said application determines a semi-cylindrical longitudinal projection and furthermore causes swelling, swelling and other deformation of the upper face of the edges of the two assembled sheets. It is therefore necessary to provide a leveling operation so that the two carpets or coverings and the intermediate bead are strictly in the same plane. This operation is in fact a long and particularly delicate job.
The invention relates to a weld bead established to a profile such that its hot application does not require any subsequent leveling or finishing operation.
The weld bead according to the invention is characterized in that it has in section a semicircular profile, the rectilinear upper face of which has two wedge-shaped lateral wings.
The appended drawing will make it possible to better understand the invention.
Fig. 1 is a vertical section showing the facing edges or selvages of two plastic sheets or mats.
Fig. 2 shows in cross section a weld bead of the usual type.
Fig. 3 is a section similar to that of FIG. 1, showing the assembly of the two edges using the bead of fig. 2.
Fig. 4 shows this assembly after leveling.
Fig. 5 is a cross section of one embodiment of the weld bead according to the present invention.
Fig. 6 shows in section the assembly produced using such a bead.
In fig. 1 shows at 1 and 2 the edges of two plastic mats intended to constitute floor coverings. In the known manner, the opposite edges of these two belts are bevelled, thus determining a space a having in section a substantially triangular profile (point facing downwards).
In current practice, to fill this space a and to assemble the two edges 1 and 2, a suitable plastic weld bead, of the type shown at 3 in FIG. 2. Such a bead has in section a circular profile of diameter slightly greater than the large base of said space a. As shown in fig. 3, the hot application of this bead 3 causes the deformation of the upper face of the edges 1 and 2, which face is thus blistered upwards. In addition, the material which constitutes this bead represents a volume greater than that of the space a, so that the surplus determines a projection or longitudinal relief on the assembly line of the two edges 1 and 2.
After cooling, it is therefore essential to provide a leveling operation using a slicer or similar tool, in order to substantially restore the flatness of the assembly, as shown in FIG. 4. It will be understood that such a leveling operation is particularly delicate since it concerns not only the material of the weld bead 3, but also that of the edges of the two belts.
With a view to remedying this drawback, the present invention relates to a specially profiled weld bead. One embodiment of this cord has been shown at 13 in FIG. 5; as shown, its sectional profile comprises a substantially semicircular lower part 13a, integral on its rectilinear upper face with two small side wings 13b in the form of a wedge.
It will be understood that this bead 13 can be very easily applied hot in the free space provided between the two edges, referenced 11 and 12 in FIG. 6. It does not cause any blistering of the opposite edges, the upper face of which tends on the contrary, under the action of heat and of the application pressure (which can be more easily exerted on a flat face than on a face. curve), to sag down; this sagging is to some extent compensated by the lateral wings 13b of the cord which thus re-establish the flat profile. It is also understood that by means of an exact calibration of the bead and a precise adjustment of the reciprocal spacing of the selvages of the two belts, there can be no surplus of material, so that the assembly ultimately does not require any finishing.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR43239A FR1356288A (en) | 1963-01-21 | 1963-01-21 | Improvements to seams for welding plastic sheets |
Publications (1)
Publication Number | Publication Date |
---|---|
CH404944A true CH404944A (en) | 1965-12-31 |
Family
ID=9694348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1607563A CH404944A (en) | 1963-01-21 | 1963-12-31 | Seam for welding plastic sheets |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH404944A (en) |
FR (1) | FR1356288A (en) |
GB (1) | GB986963A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011012930A1 (en) * | 2009-07-31 | 2011-02-03 | Aisapack Holding S.A. | Method and device for sealing tubular plastic packaging, and resulting packaging |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ZA784061B (en) * | 1977-07-22 | 1979-07-25 | Drg Ltd | Seaming plastics materials |
US5635266A (en) * | 1992-11-16 | 1997-06-03 | Armstrong World Industries, Inc. | Patterned heat welding rod for seaming resilient flooring |
-
1963
- 1963-01-21 FR FR43239A patent/FR1356288A/en not_active Expired
- 1963-12-31 CH CH1607563A patent/CH404944A/en unknown
-
1964
- 1964-01-02 GB GB161/64A patent/GB986963A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011012930A1 (en) * | 2009-07-31 | 2011-02-03 | Aisapack Holding S.A. | Method and device for sealing tubular plastic packaging, and resulting packaging |
RU2524964C2 (en) * | 2009-07-31 | 2014-08-10 | Айзапак Холдинг С.А. | Method and device for soldering of tubular polymer package and package thus produced |
Also Published As
Publication number | Publication date |
---|---|
FR1356288A (en) | 1964-03-27 |
GB986963A (en) | 1965-03-24 |
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