Page 49 - 2010-2022 hose manufactureing ability and guide
P. 49

Brands (Molded)                                Impression Brands

                    Brands may be affixed along the length of the   An impression brand is the exact opposite of
                 exterior surface of a hose at designated points.   the molded (relief) brand  described  above. In
                 Such brands  should be  of a size  and  shape   this method,  the legend is impressed into  the
                 adequate to  embrace the  legend  desired;     surface of the hose.  Such branding may be done
                 however, the circumference of the hose and the   at specific locations on  a hose  length or  in a
                 means  for applying the  brand at  the specified   continuous line.  It is accomplished by using a
                 location  (s) may  act to restrict  the  size  of the   heated branding device either of specific
                 brand.                                         configuration or on  a heated wheel for
                                                                continuous line branding. When  used  on
                    The most durable  types of brands are  those
                 embossed  or  die formed from a  metal  sheet.   vulcanized  hose, the heated  branding device
                                                                compresses the hose cover material beneath the
                 These  brands are applied to  the  surface at  the
                 designated place (s) along the hose length prior   surface and either literally distorts it or destroys
                 to vulcanization.  The formed metal die acts to   minute  areas  by charring. Some  concern must
                                                                be shown for the  depth  of the  impression,
                 mold the  brand  in  relief  on the  surface of  the
                 hose. The metal  die is usually removed        particularly as it relates to the thickness of the
                 following vulcanization.                       hose cover and the  heat  transmitted  by  the
                                                                branding device. If misused, it could affect the
                    A variation of the embossed or molded brand   life expectancy  of  the  cover or the
                 system calls  for the use of a  brand in  a color   reinforcement beneath.
                 contrasting  with that of  the  hose.  To  achieve   Impression branding is not as widely
                 this, a coating of unvulcanized colored rubber is
                 applied to the  back surface of the  metal sheet   practiced as  is  molded branding. Continuous
                 from  which  the die  is produced.  During     impression brands  have been  employed on
                                                                unvulcanized hose by use of an unheated wheel.
                 vulcanization, the colored rubber layer adheres
                 to the hose cover and when the metallic die is   This method is not applicable to hose which has
                 removed following  vulcanization, a distinctive   exterior mold pressure  applied to consolidate
                                                                the hose wall since the impressed area would be
                 brand remains in relief on the exterior surface.
                 The  colored brand  acts  to highlight  the    filled in and obliterated.
                 identifying  information.  Use of such  brands  is   Labels/Decals
                 more costly and may not be necessary for most     Rubber labels are produced in several ways.
                 applications.
                                                                A rubber sheet is either printed or has deposited
                    Another variation of the embossed or molded   upon  one  surface a coating  of latex  or  other
                 brand, employed to a significant extent in long   liquid rubber composition  having the desired
                 length  hose manufacturing,  is continuous  strip   legend in a contrasting color.  An adhesive
                 branding. This method requires that the legend   backing may be applied to the opposite side of
                 be embossed at repeated intervals  on long,    the label sheet stock. The individual labels are
                 narrow metallic or plastic strips. The strips are   then die cut to the prescribed size and shape.
                 applied  to the  exterior surface  of  the uncured   Rubber labels can be applied to hose prior to
                 hose usually when it enters the sheathing device   vulcanization and adhered to  the  outer  hose
                 or the cure tape applicator. After vulcanization,   surface  by the pressures  applied  during
                 the  strip  is removed  leaving the  hose with  a   vulcanization. They can also be pre-vulcanized
                 continuous legend in relief along its entire   and applied  to the outer  surface  after
                 length. Such a brand provides greater visibility   vulcanization by use of an adhesive.
                 than  does the  individual  brand and  will likely
                 remain visible longer during the service life of
                 the hose.













                RMA/IP-2/2003                                                                             28
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